# Study sets matching "statistics chapter 7"

Study sets

Diagrams

Classes

Users

parameter

statistic

sampling variability

sampling distribution

a number that describes some characteristics of the population

a number that describes some characteristic of a sample

value of a statistic varies in repeated random sampling

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

parameter

a number that describes some characteristics of the population

statistic

a number that describes some characteristic of a sample

uniform probability distribution

probability density function (pdf)

Area under graph of density function re…

normal curve

When two intervals of equal length between a and b, inclusive,…

An equation used to compute probabilities of continuous random…

The area under the graph of the density function over an inter…

Curve of relative frequency histograms that is symmetric and b…

uniform probability distribution

When two intervals of equal length between a and b, inclusive,…

probability density function (pdf)

An equation used to compute probabilities of continuous random…

sampling error

parameter

simple random sample

population mean

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

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

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

sampling error

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

parameter

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

parameter (think "parameter" begins wit…

statistic (think "samle" begins with a…

sampling distribution of a statistic

biased

a number that describes some characteristic of the population…

a number that describes some characteristic of a sample (typic…

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

not estimating the true center well

parameter (think "parameter" begins wit…

a number that describes some characteristic of the population…

statistic (think "samle" begins with a…

a number that describes some characteristic of a sample (typic…

parameter

statistic

sampling variability

sampling distribution

a number that describes some characteristics of the population

a number that describes some characteristic of a sample

value of a statistic varies in repeated random sampling

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

parameter

a number that describes some characteristics of the population

statistic

a number that describes some characteristic of a sample

What do we use from a sample to draw co…

We take samples from a ______________

A statistic helps us build the ________…

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

Statistic

Population distribution

Sampling distribution

centered; variability

What do we use from a sample to draw co…

Statistic

We take samples from a ______________

Population distribution

parameter

statistic

sampling variability

sampling distribution

a number that describes some characteristics of the population

a number that describes some characteristic of a sample

value of a statistic varies in repeated random sampling

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

parameter

a number that describes some characteristics of the population

statistic

a number that describes some characteristic of a sample

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 s…

,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.

Parameter

Statistic

Sampling variability

Population distribution

a number that describes some characteristic of the population;…

a number that describes some characteristic of a sample; often…

the value of a statistic varies in repeated random sampling

describes individuals

Parameter

a number that describes some characteristic of the population;…

Statistic

a number that describes some characteristic of a sample; often…

Explain the difference between a parame…

Explain the difference between a sample…

Two symbols are used for the mean: μ a…

Two symbols are used for the mean: μ a…

A parameter is a measure of the population, and a statistic i…

A sample is a collection of people or objects taken from the p…

The symbol μ represents a parameter and x̅ represents a statis…

The mean is x̅

Explain the difference between a parame…

A parameter is a measure of the population, and a statistic i…

Explain the difference between a sample…

A sample is a collection of people or objects taken from the p…

parameter

statistic

sampling variability

sampling distribution

a number that describes some characteristic of the population

a number that describes some characteristic of a sample

the value of a statistic varies in repeated random sampling

describes the values the statistic in all possible samples of…

parameter

a number that describes some characteristic of the population

statistic

a number that describes some characteristic of a sample

Point Estimate

Confidence Interval

Confidence Level

Critical Value

A single value (or point) that is used to estimate a populatio…

A range of values used to estimate a population parameter.

The probability of 1- alpha, that the confidence interval actu…

The number on the borderline separating unlikely values from t…

Point Estimate

A single value (or point) that is used to estimate a populatio…

Confidence Interval

A range of values used to estimate a population parameter.

parameter (p and p)

statistic (s and s)

sampling variability

sampling distribution of a statistic

a number that describes some characteristics of the population…

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

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

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

parameter (p and p)

a number that describes some characteristics of the population…

statistic (s and s)

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

Institutional Review Board

informed consent

confidential

anonymity

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

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

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

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 th…

informed consent

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

Parameter

Statistic

Population v. Sample Notation

Sampling Variability

A parameter is a number that describes some characteristic of…

A statistic is a number that describes some characteristic of…

The value of a statistic varies in repeated random sampling.…

Parameter

A parameter is a number that describes some characteristic of…

Statistic

A statistic is a number that describes some characteristic of…

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, t…

random variable

a numerical variable whose value is determined by the outcome…

discrete

can count, isolated points on number line

Alpha

Bias

Confidence interval

Confidence level

the probability of error, or the probability that a confidence…

a criterion used to select sample statistics as estimators. a…

an estimate of a population value in which a range of values i…

a frequently used alternate way of expressing alpha, the proba…

Alpha

the probability of error, or the probability that a confidence…

Bias

a criterion used to select sample statistics as estimators. 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

Determine whether the numerical value i…

Determine whether the numerical value i…

Determine whether the numerical value i…

Determine whether the numerical value i…

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

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

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

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

Determine whether the numerical value i…

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

Determine whether the numerical value i…

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

Hypothesis

Test Statistic

Null Hypothesis

Alternative Hypothesis

statement made about the value of a population parameter

the result of the experiment or the statistic that is calculat…

hypothesis that you assume to be correct

tells you about the parameter if your assumption is shown to b…

Hypothesis

statement made about the value of a population parameter

Test Statistic

the result of the experiment or the statistic that is calculat…

parameter

statistic

sampling variability

sampling distribution

a number that describes some characteristics of the population

a number that describes some characteristic of a sample

value of a statistic varies in repeated random sampling

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

parameter

a number that describes some characteristics of the population

statistic

a number that describes some characteristic of a sample

Parameter

Statistic

Statistic

Parameter

Mark retired from competitive athletics last year. In his care…

In a survey conducted in town of Atherton 28% of adult respond…

A study of 3300 college students in the cit of Pemblington fou…

26.2 of the mayors of cities in a certain state are from minor…

Parameter

Mark retired from competitive athletics last year. In his care…

Statistic

In a survey conducted in town of Atherton 28% of adult respond…