#### Study sets matching "statistics chapter 7"

#### Study sets matching "statistics chapter 7"

scatterplots

association

explanatory variable

response variable

shows the relationship between two quantitative variables mea…

direction - positive assocaition - one variable increases so…

the x-axis, the explanatory or predictor variable that explai…

y-axis the variable you hope to predict or explain

scatterplots

shows the relationship between two quantitative variables mea…

association

direction - positive assocaition - one variable increases so…

sampling error

parameter

simple random sample

population mean

the difference between a measure computer from a sample (a st…

a measure computed from the entire population. As long as the…

a simple selected in such a manner that each possible sample…

sampling error

the difference between a measure computer from a sample (a st…

parameter

a measure computed from the entire population. As long as the…

statistic

parameter

mean

variance

a numerical descriptive measure of a sample

a numerical descriptive measure of a population

statistic: x bar... parameter: mu

statistic: s^2... parameter: σ^2

statistic

a numerical descriptive measure of a sample

parameter

a numerical descriptive measure of a population

Parameter

Statistics

Sampling Distribution

Unbiased Estimator

is a number that describes some characteristics of the popula…

is a number that describes some characteristics of the sample

is the distribution of values taken by the statistics in all…

a statistic used to estimate a parameter , if the mean of its…

Parameter

is a number that describes some characteristics of the popula…

Statistics

is a number that describes some characteristics of the sample

parameter

statistic

sampling distribution

unbiased estimator

a number that describes some characteristic of the population…

a number that describes some characteristic of a sample. This…

the distribution of values taken by the statistic in all poss…

statistic used to estimate a parameter is this if the mean of…

parameter

a number that describes some characteristic of the population…

statistic

a number that describes some characteristic of a sample. This…

Perfect "r"

Correlation Little Strength

Correlation Low Strength

Correlation Moderate Strength

Strength/Direction, Larger the r value stronger correlation

0.00-0.25

0.26-0.49

0.50-0.69

Perfect "r"

Strength/Direction, Larger the r value stronger correlation

Correlation Little Strength

0.00-0.25

random variable

discrete

continuous

probability distribution of a discrete…

a numerical variable whose value is determined by the outcome…

can count, isolated points on number line

measured, includes entire interval on number line

gives the probability associated with each x value (formula,…

random variable

a numerical variable whose value is determined by the outcome…

discrete

can count, isolated points on number line

parameter

statistic

sampling distribution

unbiased statistic

number that describes the population, a fixed number that is…

number that describes a sample, a known number when a sample…

a statistic is distribution of values taken by the statistic…

if the mean of its sampling distribution is equal to the true…

parameter

number that describes the population, a fixed number that is…

statistic

number that describes a sample, a known number when a sample…

Model

Normal Curve

Normally Distributed

Inflection Points

Anything that represents reality.

Bell shaped distribution.

A continuous random variable in which its relative frequency…

The point at which the normal curve changes direction.

Model

Anything that represents reality.

Normal Curve

Bell shaped distribution.

Parameter

Statistic

Sampling distribution

Unbiased Estimator

is a number that describes some characteristic of the populat…

is a number that describes some characteristic of a sample

the distribution of values taken by the statistics in all pos…

a statistic used to estimate the parameter is a ______ if the…

Parameter

is a number that describes some characteristic of the populat…

Statistic

is a number that describes some characteristic of a sample

Average

Central limit theorem

Exponential distribution

Mean

A number that describes the central tendency of the data

Given a random variable with known mean and known standard de…

A continuous random variable that appears when we are interes…

A number that measures the central tendency, aka average

Average

A number that describes the central tendency of the data

Central limit theorem

Given a random variable with known mean and known standard de…

Addition Rule

Complement Rule

Conditional Probability

Disjoint Events

If A and B are disjoint events, the =n the probability of A o…

The probability of an event occurring is 1 minus the probabil…

P(B/A)= (P(A and B))/(P(A))... P(B/A) is read "the probability o…

Two events are disjoint if they have no outcomes in common. I…

Addition Rule

If A and B are disjoint events, the =n the probability of A o…

Complement Rule

The probability of an event occurring is 1 minus the probabil…

Assumption

Parametric test

Nonparametric test

Robust hypothesis test

a characteristic that we ideally require the population from…

an inferential statistical analysis based on a set of assumpt…

an inferential statistical analysis that is not based on a se…

a test that produces fairly accurate results even when the da…

Assumption

a characteristic that we ideally require the population from…

Parametric test

an inferential statistical analysis based on a set of assumpt…

hypothesis test

null hypothesis

alternative hypothesis

type I error

process that uses sample statistics to test a claim about the…

statistical hypothesis that contains a statement of equality

complement of the null... - statement that must be true if Ho is…

occurs if the null hypothesis is rejected when it is true

hypothesis test

process that uses sample statistics to test a claim about the…

null hypothesis

statistical hypothesis that contains a statement of equality

sampled population

frame

parameter

simple random sample

the population from which the sample is taken

a listing of the elements the sample will be selected from

a numerical characteristic of a population, such as a populat…

a blank of size n from a finite population of size N is a sam…

sampled population

the population from which the sample is taken

frame

a listing of the elements the sample will be selected from

Empirical Distribution

Theoretical Distribution

Binomial Distribution

Normal Distribution

Scores that come observations.

Hypothesized scores based on mathematical formulas and logic.

Distribution of the frequency of events that can have only tw…

A bell shaped, theoretical distribution that predicts the fre…

Empirical Distribution

Scores that come observations.

Theoretical Distribution

Hypothesized scores based on mathematical formulas and logic.

random variable

discrete

continuous

probability distribution of a discrete…

a numerical variable whose value is determined by the outcome…

can count, isolated points on number line

measured, includes entire interval on number line

gives the probability associated with each x value (formula,…

random variable

a numerical variable whose value is determined by the outcome…

discrete

can count, isolated points on number line

statistical inference

parameter

statistic

biased, wording, leading, ambiguous, i…

To obtain information about a population from information con…

A numerical characteristic of a population

a numerical characteristic of a sample

Common sampling pitfalls are b______ samples, w________ of qu…

statistical inference

To obtain information about a population from information con…

parameter

A numerical characteristic of a population

Population

Parameter

Census

Sample

a big group of people or objects we wish to study

a numerical property that summarizes a characteristic of the…

a survey where every member of the population is measured

a small group of people or objects taken from the population…

Population

a big group of people or objects we wish to study

Parameter

a numerical property that summarizes a characteristic of the…

Biased Sample

Unbiased Sample/Representative

Statistics

Voluntary Response Sample

is when one or more parts of the population are favored.

is when each item or person in the population is as likely to…

deals with collecting, organizing/analyzing, and interpreting…

involves only those who want to participate in the sampling.

Biased Sample

is when one or more parts of the population are favored.

Unbiased Sample/Representative

is when each item or person in the population is as likely to…

household bias

nonresponse bias

quota sampling bias

response bias

when a sample includes only one member of any given household

make it hard to know which part of the population is underrep…

results when interviewers are given free choice in picking pe…

when the wording of the question changes the true answer

household bias

when a sample includes only one member of any given household

nonresponse bias

make it hard to know which part of the population is underrep…

Point Estimate

Interval Estimate

Confidence Level

Confidence Interval

A specific numerical value estimate of a parameter. The best…

An interval or range of values used to estimate the parameter…

The probability that the interval estimate will contain the p…

A specific interval estimate of a parameter determined by usi…

Point Estimate

A specific numerical value estimate of a parameter. The best…

Interval Estimate

An interval or range of values used to estimate the parameter…

Discrete

Continuous

Random Variable

Probability Distribution

A numerical variable that is countable

A numerical variable whose values can be any value on an inte…

A numerical variable with a value determined by the outcome o…

A formula, table, or graph that gives the probability of each…

Discrete

A numerical variable that is countable

Continuous

A numerical variable whose values can be any value on an inte…

What type of graph is used to show the…

When describing a scatterplot, what fo…

What is it meant by an explanatory var…

What is it meant by a response variable?

Scatterplot

1. Direction... 2. Form... 3. How strong the relationship is... 4. The…

The independent variable on the x axis (X variable)

The variable of interest, respondent to the explanatory varia…

What type of graph is used to show the…

Scatterplot

When describing a scatterplot, what fo…

1. Direction... 2. Form... 3. How strong the relationship is... 4. The…

data set

range

mean

median

all the data collected in a particular study

Distance between highest and lowest scores in a set of data.

the AVERAGE of a set of data; add them all up and divide the…

,Statistics: Mean, Median, Mode, Range, Graphing Data

data set

all the data collected in a particular study

range

Distance between highest and lowest scores in a set of data.

Sample

Population

Simple Random Sample

Survey

To save time and money, part of the large group, called a ___…

The large group being studied.

This is when each item or person in the population is as like…

This is a method of collecting information.

Sample

To save time and money, part of the large group, called a ___…

Population

The large group being studied.

Determine whether the numerical value…

Determine whether the numerical value…

Determine whether the numerical value…

Determine whether the numerical value…

STATISTIC - the value $68,000 is a numerical description of a…

STATISTIC - the value of 38% is a numerical description of a…

PARAMETER - the 62 surviving passengers out of 97 total passe…

PARAMETER - the value of 60% is a numerical description of th…

Determine whether the numerical value…

STATISTIC - the value $68,000 is a numerical description of a…

Determine whether the numerical value…

STATISTIC - the value of 38% is a numerical description of a…

random variable

discrete

continuous

probability distribution of a discrete…

a numerical variable whose value is determined by the outcome…

can count, isolated points on number line

measured, includes entire interval on number line

gives the probability associated with each x value (formula,…

random variable

a numerical variable whose value is determined by the outcome…

discrete

can count, isolated points on number line

Parameter

Statistic

Population mean

Sample mean

A number that describes sole characteristic of the population…

A number that describes some characteristic of a sample. The…

Mew

X bar

Parameter

A number that describes sole characteristic of the population…

Statistic

A number that describes some characteristic of a sample. The…

Adjusted hospital autopsy rate

Adjusted hospital autopsy rate Formula

Autopsy

Autopsy Rate

The proportion of hospital autopsies performed following the…

Total hospital autopsies X 100/Total # of deaths of hospital…

The postmortem examination of the organs and tissues of a bod…

The proportion or percentage of deaths in a healthcare organi…

Adjusted hospital autopsy rate

The proportion of hospital autopsies performed following the…

Adjusted hospital autopsy rate Formula

Total hospital autopsies X 100/Total # of deaths of hospital…

Central Limit Theorem

Mean of x-bar

Nonsampling Errors

Population Distribution

For a large sample, the shape of the sampling distribution is…

The mean of the sampling distribution

The errors that occur during the collection, recording and ta…

The probability distribution of the population data

Central Limit Theorem

For a large sample, the shape of the sampling distribution is…

Mean of x-bar

The mean of the sampling distribution

autopsy

necropsy

postmortem examination

morgue

examination of a dead body to determine the cause of death; c…

another name for autopsy

another name for autopsy

normally the place in a hospital where autopsies are performed

autopsy

examination of a dead body to determine the cause of death; c…

necropsy

another name for autopsy

Inferential Statistics

Sampling

Random sampling

Types of Distributions

Social scientists want to know about the characteristics of a…

goal: obtain a subset of the population that represents the p…

-each element in the population has an equal chance at being…

1. Population... 2. Sample... 3.Sampling

Inferential Statistics

Social scientists want to know about the characteristics of a…

Sampling

goal: obtain a subset of the population that represents the p…

What do we use from a sample to draw c…

We take samples from a ______________

A statistic helps us build the _______…

X(bar) and P(hat) are good when they a…

Statistic

Population distribution

Sampling distribution

centered; variability

What do we use from a sample to draw c…

Statistic

We take samples from a ______________

Population distribution

Census

Clinical Method

Closed Questions

Face-to-Face

survey of whole population.

interview method using structured questions but may be tailor…

questions with only a specified set of responses that the res…

interview in which researcher and interviewee talk together i…

Census

survey of whole population.

Clinical Method

interview method using structured questions but may be tailor…

parameter

statistic

sampling distribution

unbiased estimator

a number that describes some characteristic of the population…

a number that describes some characteristic of a sample. This…

the distribution of values taken by the statistic in all poss…

statistic used to estimate a parameter is this if the mean of…

parameter

a number that describes some characteristic of the population…

statistic

a number that describes some characteristic of a sample. This…

Correlation

Scatterplot (or Scatter Diagram)

Positive Correlation

Negative Correlation

exists between two variables when higher values of one variab…

a graph in which each point represents the values of two vari…

a type of correlation in which both variables tend to increas…

a type of correlation in which the two variables tend to chan…

Correlation

exists between two variables when higher values of one variab…

Scatterplot (or Scatter Diagram)

a graph in which each point represents the values of two vari…

Random Variable

Discrete Random Variable

Continuous Random Variable

Density Curve

A variable taking numerical values determined by the outcome…

Random variable X with a countable number of possible values

Random variable X with values, a random variable whose values…

A mathematical model used to describe the overall pattern of…

Random Variable

A variable taking numerical values determined by the outcome…

Discrete Random Variable

Random variable X with a countable number of possible values

Hypothesis Test

Statistical Hypothesis

Null Hypothesis

Alternative Hypothesis

a process that uses sample statistics to test a claim

a statement or claim about a population parameter

a statistical hypothesis that contains a statement of equalit…

a statement of inequality, must be true if Ho is false. Denot…

Hypothesis Test

a process that uses sample statistics to test a claim

Statistical Hypothesis

a statement or claim about a population parameter

parameter

statistic

population distribution

sampling distribution

number that describes a population

number that describes a sample

describes the value of the variable for all individuals in a…

describes the values of the statistic in all possible samples…

parameter

number that describes a population

statistic

number that describes a sample

bias

selection bias

nonresponse bias

simple random sample

the tendency of a sample statistic to systematically overesti…

a systematic underrepresentation of certain groups from consi…

a systematic difference in preferences between respondents an…

A sample of n observations that has the same probability of b…

bias

the tendency of a sample statistic to systematically overesti…

selection bias

a systematic underrepresentation of certain groups from consi…

Sampling error

Distribution of sample means

Sampling distribution

Expected value of M

Is the natural discrepancy, or modern era, between a sample s…

D_____ of s_____ m______ is the collection of sample means fo…

S______ d______ is a distribution of statistics obtained by s…

The mean of the distribution of sample means is equal to the…

Sampling error

Is the natural discrepancy, or modern era, between a sample s…

Distribution of sample means

D_____ of s_____ m______ is the collection of sample means fo…

Adjusted hospital autopsy rate

Adjusted hospital autopsy rate Formula

Autopsy

Autopsy Rate

The proportion of hospital autopsies performed following the…

Total hospital autopsies X 100/Total # of deaths of hospital…

The postmortem examination of the organs and tissues of a bod…

The proportion or percentage of deaths in a healthcare organi…

Adjusted hospital autopsy rate

The proportion of hospital autopsies performed following the…

Adjusted hospital autopsy rate Formula

Total hospital autopsies X 100/Total # of deaths of hospital…