#### 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

Institutional Review Board

informed consent

confidential

anonymity

-The organization that carries out the study must have this t…

Type of consent a subject must give, usually in writing, befo…

-All individual data must be kept confidential. Only statisti…

When subjects names are not known even to the director of the…

Institutional Review Board

-The organization that carries out the study must have this t…

informed consent

Type of consent a subject must give, usually in writing, befo…

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

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…

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

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…

parameter (p and p)

statistic (s and s)

sampling variability

sampling distribution of a statistic

a number that describes some characteristics of the populatio…

a number that describes some characteristic of a sample (x ba…

the value of a statistic varies in repeated random sampling -…

is the distribution of values taken by the statistic in all p…

parameter (p and p)

a number that describes some characteristics of the populatio…

statistic (s and s)

a number that describes some characteristic of a sample (x ba…

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.

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

assumptions

chi-square distribution

confidence interval

confidence level

techniques that must be met before valid conclusions can be o…

a probability distribution obtained from the values of (n-1)s…

a specific interval estimate of parameter determined by using…

the probability that a parameter lies within the specified in…

assumptions

techniques that must be met before valid conclusions can be o…

chi-square distribution

a probability distribution obtained from the values of (n-1)s…

ethical

fake

wrong

institutional review board

The production and use of data like all human endeavors, rais…

few researches, in the pursuit of professional advancement, p…

There is no ethical question here- faking data to advance you…

this decides if things are ethical to let the research go on.…

ethical

The production and use of data like all human endeavors, rais…

fake

few researches, in the pursuit of professional advancement, p…

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…

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

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…

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…

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

biased sample

unbiased sample

convenience sample

population

a sample in which one or more parts of the population are fav…

a sample that fairly represents the population- fair

easily accessed e.g. to find out favorite music genre, you go…

the group being studied e.g. students in a middle school

biased sample

a sample in which one or more parts of the population are fav…

unbiased sample

a sample that fairly represents the population- fair

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.