Quiz about AP Statistics Review 1

Question 1

The entire collection of individuals or objects about which information is desired is called a sample.

Accepted Answer

False

Answer

True

Question 2

Methods for summarizing data make up the branch of statistics called

Accepted Answer

Descriptive Statistics

Answer

Inferential Statistics

Answer

Probability

Question 3

A primary use of inferential statistics is to make generalizations from a sample to a population.

Accepted Answer

True

Answer

False

Question 4

A data set is discrete if the possible values are isolated points on the number line.

Accepted Answer

True

Answer

False

Question 5

Frequency distributions can be used with _______ data.

Accepted Answer

Both Categorical & Quantitative

Answer

Categorical

Answer

Quantitative

Question 6

The relative frequency for a particular category is the number of times the category appears in the data.

Accepted Answer

False

Answer

True

Question 7

Dotplots work best for small and moderate sized numerical data sets.

Accepted Answer

True

Answer

False

Question 8

Bar charts should be used with categorical data.

Accepted Answer

True

Answer

False

Question 9

A data set consisting of many observations of a single characteristic is a categorical data set.

Accepted Answer

False

Answer

True

Question 10

A data set is multivariate if it consists only of numeric variables.

Accepted Answer

False

Answer

True

Question 11

By definition, a simple random sample of size n is any sample that is selected in a manner to guarantee every individual in the population has an equal chance of selection.

Accepted Answer

False

Answer

True

Question 12

Clusters are non-overlapping subgroups of a population that have been identified as homogeneous.

Accepted Answer

False

Answer

True

Question 13

Blocking is a technique that can be used to filter out the effects of extraneous (confounding) factors.

Accepted Answer

True

Answer

False

Question 14

Response bias can occur when responses are not actually obtained from all individuals selected for inclusion in the sample.

Accepted Answer

False

Answer

True

Question 15

Selection bias can occur if volunteers only are used in a study.

Accepted Answer

True

Answer

False

Question 16

Increasing sample size will generally eliminate bias in a sample.

Accepted Answer

False

Answer

True

Question 17

A study is an observational study if the investigator observes the behavior of a response variable when one or more factors are manipulated.

Accepted Answer

False

Answer

True

Question 18

As long as the sample size is small relative to the population, there is little practical difference between sampling with replacement and sampling without replacement.

Accepted Answer

True

Answer

False

Question 19

A treatment is any particular combination of values for the explanatory variables.

Accepted Answer

True

Answer

False

Question 20

Two factors are confounding if their effects on the response variable cannot be distinguished from one another.

Accepted Answer

True

Answer

False

Question 21

Random assignment to treatments will guarantee groups that are exactly alike for experimental purposes.

Accepted Answer

False

Answer

True

Question 22

Random assignment of volunteers should result in comparable experimental groups.

Accepted Answer

True

Answer

False

Question 23

Replicating in an experiment means that the number of subjects is greater than 1.

Accepted Answer

True

Answer

False

Question 24

In a discrete data, what name is given to the item occurring most frequently?

Accepted Answer

Mode

Answer

Median

Answer

Mean

Answer

Frequency

Question 25

For a data containing 15 items arranged in ascending order, what item is the median of the data

Accepted Answer

8th item

Answer

7th item

Answer

6th and 7th item

Answer

7th and 8th item

AP Statistics Review 1

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