Question 1

How are statistics important in our everyday lives, and why do we need to
understand them?

Accepted Answer

Statistics are used to analyze the results of surveys. It is important to understand the terms and concepts so that one can understand exactly what
is being represented (or misrepresented) by a given statement.

Question 2

Determine which of the following describes ordinal data.
i. My best friends are Georgia, Amithaba, and Raphael.
ii. My favorite numbers are 2,7 and 13 .

Accepted Answer

A)  i only 
B)  both $\mathrm { i }$ and ii 
C)  ii only 
D)  neither i nor ii 
A)  i only 
B)  both $\mathrm { i }$ and ii 
C)  ii only 
D)  neither i nor ii D

Question 3

The _______________ level of measurement classifies data into categories that
can be ranked; however, precise differences between the ranks do not exist.

Accepted Answer

ordinal

Question 4

A ______________ consists of all subjects that are being studied.

Accepted Answer

The answer of A ______________ consists of all subjects that...

Question 5

A middle school student passes out leaflets to the adults at a school function. The leaflets ask the recipient to indicate whether they believe in anthropogenic global warming. The
Bottom of the leaflet indicates that the completed leaflet should be returned to the
Student. Identify the kind of sample that is being used.

Accepted Answer

A)  cluster sample 
B)  sample of convenience 
C)  stratified sample 
D)  systematic sample 
A)  cluster sample 
B)  sample of convenience 
C)  stratified sample 
D)  systematic sample

Question 6

Give the boundaries of the given value. 11.6

Accepted Answer

A)  11.5-11.7 
B)  11.55-11.65 
C)  10.6-12.6 
D)  11.59-11.61 
A)  11.5-11.7 
B)  11.55-11.65 
C)  10.6-12.6 
D)  11.59-11.61

Question 7

Which of the following correctly describes the relationship between a sample and a population?

Accepted Answer

A)  A population is a group of samples that may or may not be included in a study. 
B)  A sample is a group of populations that are subject to observation. 
C)  A sample is a group of subjects selected from a population to be studied. 
D)  A population and a sample are not related. 
A)  A population is a group of samples that may or may not be included in a study. 
B)  A sample is a group of populations that are subject to observation. 
C)  A sample is a group of subjects selected from a population to be studied. 
D)  A population and a sample are not related.

Question 8

In the following chart, Height is the independent variable and Age of Tree is the depender variable.

Accepted Answer

A) True 
 B)False

Question 9

Give the boundaries of the given value. 84.4 yards

Accepted Answer

A)  84.39-84.41 pounds 
B)  84.4-85.4 pounds 
C)  84.35-84.45 pounds 
D)  83.4-85.4 pounds 
A)  84.39-84.41 pounds 
B)  84.4-85.4 pounds 
C)  84.35-84.45 pounds 
D)  83.4-85.4 pounds

Question 10

One advantage of a(n) ______________ study is that it occurs in a natural setting
without intervention by the researcher.

Accepted Answer

The answer of One advantage of a(n) ______________ study is...

Question 11

The amount of time needed to run the Boston marathon is an example of which type of variable?

Accepted Answer

A)  continuous 
B)  temporal 
C)  discrete 
D)  qualitative 
A)  continuous 
B)  temporal 
C)  discrete 
D)  qualitative

Question 12

Give the boundaries of the given value. 53 feet

Accepted Answer

A)  53-54 feet 
B)  52.5-53.5 feet 
C)  52-54 feet 
D)  52.9-53.1 feet 
A)  53-54 feet 
B)  52.5-53.5 feet 
C)  52-54 feet 
D)  52.9-53.1 feet

Question 13

Which one of the following data are continuous?

Accepted Answer

A)  the rankings of the trees, from most numerous to least numerous 
B)  the number of representatives of each species in the park 
C)  the average height of a sample of trees 
D)  the number of species of trees in a park 
A)  the rankings of the trees, from most numerous to least numerous 
B)  the number of representatives of each species in the park 
C)  the average height of a sample of trees 
D)  the number of species of trees in a park

Question 14

A magazine tests a new car and reports that it could be twice as much fun to drive. This is NOT an example of

Accepted Answer

A)  detached statistics 
B)  changing the subject 
C)  implied connections 
D)  suspect samples 
A)  detached statistics 
B)  changing the subject 
C)  implied connections 
D)  suspect samples

Question 15

The number of birds in a tree is an example of a continuous variable.

Accepted Answer

A) True 
 B)False

Question 16

An independent variable can also be called a(n)

Accepted Answer

A)  explanatory variable. 
B)  outcome variable. 
C)  suggestive variable. 
D)  free variable. 
A)  explanatory variable. 
B)  outcome variable. 
C)  suggestive variable. 
D)  free variable.

Question 17

Which of the following sample types should you always regard as unreliable?

Accepted Answer

A)  voluntary response samples 
B)  stratified samples 
C)  cluster samples 
D)  simple random samples 
A)  voluntary response samples 
B)  stratified samples 
C)  cluster samples 
D)  simple random samples

Question 18

Give the boundaries of the given value. 50 quarts

Accepted Answer

A)  49.5-50.5 quarts 
B)  49-51 quarts 
C)  50-51 quarts 
D)  49.9-50.1 quarts 
A)  49.5-50.5 quarts 
B)  49-51 quarts 
C)  50-51 quarts 
D)  49.9-50.1 quarts

Question 19

Determine which of the following describes qualitative data.
i). the volume of a shipping container, in gallons
ii). the name of the material from which the container is made
iii). the shape of the container

Accepted Answer

A)  i, ii, and iii 
B)  $\mathrm { i }$ and iii only 
C)  ii and iii only 
D)  $\mathrm { i }$ and ii only 
A)  i, ii, and iii 
B)  $\mathrm { i }$ and iii only 
C)  ii and iii only 
D)  $\mathrm { i }$ and ii only

Question 20

In which branch of statistics would a researcher acquire twenty-five 2000 Toyota Celicas, drive them until they had a major mechanical failure, record the final mileage,
And then write a report for Car and Driver?

Accepted Answer

A)  differential statistics 
B)  inferential statistics 
C)  predictive statistics 
D)  descriptive statistics 
A)  differential statistics 
B)  inferential statistics 
C)  predictive statistics 
D)  descriptive statistics

How are statistics important in our everyday lives, and why do we need to understand them?

Determine which of the following describes ordinal data. i. My best friends are Georgia, Amithaba, and Raphael. ii. My favorite numbers are 2,7 and 13 .

The _______________ level of measurement classifies data into categories that can be ranked; however, precise differences between the ranks do not exist.

A ______________ consists of all subjects that are being studied.

Give the boundaries of the given value. 11.6

Which of the following correctly describes the relationship between a sample and a population?

In the following chart, Height is the independent variable and Age of Tree is the depender variable.

Give the boundaries of the given value. 84.4 yards

One advantage of a(n) ______________ study is that it occurs in a natural setting without intervention by the researcher.

The amount of time needed to run the Boston marathon is an example of which type of variable?

Give the boundaries of the given value. 53 feet

Which one of the following data are continuous?

A magazine tests a new car and reports that it could be twice as much fun to drive. This is NOT an example of

The number of birds in a tree is an example of a continuous variable.

An independent variable can also be called a(n)

Which of the following sample types should you always regard as unreliable?

Give the boundaries of the given value. 50 quarts

Determine which of the following describes qualitative data. i). the volume of a shipping container, in gallons ii). the name of the material from which the container is made iii). the shape of the container

In which branch of statistics would a researcher acquire twenty-five 2000 Toyota Celicas, drive them until they had a major mechanical failure, record the final mileage, And then write a report for Car and Driver?

Frequency Distributions and Graphs

Data Description

Probability and Counting Rules

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

Exam 1: The Nature of Probability and Statistics

How are statistics important in our everyday lives, and why do we need to understand them?

Determine which of the following describes ordinal data. i. My best friends are Georgia, Amithaba, and Raphael. ii. My favorite numbers are 2,7 and 13 .

The _______________ level of measurement classifies data into categories that can be ranked; however, precise differences between the ranks do not exist.

A ______________ consists of all subjects that are being studied.

Give the boundaries of the given value. 11.6

Which of the following correctly describes the relationship between a sample and a population?

In the following chart, Height is the independent variable and Age of Tree is the depender variable.

Give the boundaries of the given value. 84.4 yards

One advantage of a(n) ______________ study is that it occurs in a natural setting without intervention by the researcher.

The amount of time needed to run the Boston marathon is an example of which type of variable?

Give the boundaries of the given value. 53 feet

Which one of the following data are continuous?

A magazine tests a new car and reports that it could be twice as much fun to drive. This is NOT an example of

The number of birds in a tree is an example of a continuous variable.

An independent variable can also be called a(n)

Which of the following sample types should you always regard as unreliable?

Give the boundaries of the given value. 50 quarts

Determine which of the following describes qualitative data. i). the volume of a shipping container, in gallons ii). the name of the material from which the container is made iii). the shape of the container

In which branch of statistics would a researcher acquire twenty-five 2000 Toyota Celicas, drive them until they had a major mechanical failure, record the final mileage, And then write a report for Car and Driver?

Frequency Distributions and Graphs

Data Description

Probability and Counting Rules

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters