Question 1

For which situation is a grouped frequency table appropriate?

Accepted Answer

A)  data set on the weights of 50 adolescents, age 12 to 18 
B)  data set on the political affiliation of the students in your statistics class 
C)  data set on the number of siblings of 50 adolescents, age 12 to 18 
D)  data set on the letter grades of the students in your statistics class 
A)  data set on the weights of 50 adolescents, age 12 to 18 
B)  data set on the political affiliation of the students in your statistics class 
C)  data set on the number of siblings of 50 adolescents, age 12 to 18 
D)  data set on the letter grades of the students in your statistics class

Question 2

Use the following to answer questions 
This histogram represents the distribution of the number of years of education completed by twins who attended the 16th Annual Twins Day Festival in Twinsburg, Ohio, in August of 1991.
Figure: Years of Education  
-(Figure: Years of Education) Based on the distribution, how many twins completed 13 years of education?

Accepted Answer

A)  11 
B)  12 
C)  20 
D)  65 
A)  11 
B)  12 
C)  20 
D)  65

Question 3

A negative skew may have a tail that indicates extreme scores _____ the center of the distribution.

Accepted Answer

A)  around 
B)  below 
C)  above 
D)  on either side of 
A)  around 
B)  below 
C)  above 
D)  on either side of

Question 4

Use the following to answer questions 
This histogram represents the distribution of the number of years of education completed by twins who attended the 16th Annual Twins Day Festival in Twinsburg, Ohio, in August of 1991.
Figure: Years of Education  
-(Figure: Years of Education) Based on the distribution, what is the number of years of education that was completed by most twins?

Accepted Answer

A)  12.0 
B)  13.0 
C)  14.0 
D)  16.0 
A)  12.0 
B)  13.0 
C)  14.0 
D)  16.0

Question 5

Of the different types of distributions, which distribution is described by a tail that extends to the left?

Accepted Answer

A)  positively skewed 
B)  negatively skewed 
C)  nominal 
D)  normal 
A)  positively skewed 
B)  negatively skewed 
C)  nominal 
D)  normal

Question 6

Use the following to answer questions 
This polygon represents a fictional distribution of scores.
Figure: Frequency Polygon  
-(Figure: Frequency Polygon) Based on the frequency distribution, how many participants scored between 1 and 3?

Accepted Answer

A)  2 
B)  3 
C)  3.5 
D)  18 
A)  2 
B)  3 
C)  3.5 
D)  18

Question 7

A normal distribution is _____, while a skewed distribution is _____.

Accepted Answer

A)  nonsymmetric; symmetric 
B)  symmetric; nonsymmetric 
C)  unimodal; symmetric 
D)  symmetric; unimodal 
A)  nonsymmetric; symmetric 
B)  symmetric; nonsymmetric 
C)  unimodal; symmetric 
D)  symmetric; unimodal

Question 8

Which of these is NOT displayed in a frequency table?

Accepted Answer

A)  the frequency of observations at each variable value 
B)  values outside of the variable's range of observed values 
C)  all observed variable values 
D)  outlier data that is unexpected 
A)  the frequency of observations at each variable value 
B)  values outside of the variable's range of observed values 
C)  all observed variable values 
D)  outlier data that is unexpected

Question 9

A _____ is a visual depiction of data that shows how often each value occurred.

Accepted Answer

A)  frequency distribution 
B)  frequency table 
C)  grouped frequency table 
D)  frequency polygon 
A)  frequency distribution 
B)  frequency table 
C)  grouped frequency table 
D)  frequency polygon

For which situation is a grouped frequency table appropriate?

A negative skew may have a tail that indicates extreme scores _____ the center of the distribution.

Of the different types of distributions, which distribution is described by a tail that extends to the left?

Use the following to answer questions This polygon represents a fictional distribution of scores. Figure: Frequency Polygon -(Figure: Frequency Polygon) Based on the frequency distribution, how many participants scored between 1 and 3?

A normal distribution is _, while a skewed distribution is _.

Which of these is NOT displayed in a frequency table?

A _____ is a visual depiction of data that shows how often each value occurred.

An Introduction to Statistics and Research Design

Visual Displays of Data

Central Tendency and Variability

Sampling and Probability

The Normal Curve, Standardization and Z Scores

Hypothesis Testing With Z Tests

Confidence Intervals, Effect Size, and Statistical Power

The Single-Sample T Test

The Paired-Samples T Test

The Independent-Samples T Test

One-Way Between-Groups Anova

One-Way Within-Groups Anova

Two-Way Between-Groups Anova

Correlation

Regression

Chi-Square Tess

Choosing and Reporting Statistics

Filters

Exam 2: Frequency Distributions

For which situation is a grouped frequency table appropriate?

A negative skew may have a tail that indicates extreme scores _____ the center of the distribution.

Of the different types of distributions, which distribution is described by a tail that extends to the left?

Use the following to answer questions This polygon represents a fictional distribution of scores. Figure: Frequency Polygon -(Figure: Frequency Polygon) Based on the frequency distribution, how many participants scored between 1 and 3?

A normal distribution is _____, while a skewed distribution is _____.

Which of these is NOT displayed in a frequency table?

A _____ is a visual depiction of data that shows how often each value occurred.

An Introduction to Statistics and Research Design

Visual Displays of Data

Central Tendency and Variability

Sampling and Probability

The Normal Curve, Standardization and Z Scores

Hypothesis Testing With Z Tests

Confidence Intervals, Effect Size, and Statistical Power

The Single-Sample T Test

The Paired-Samples T Test

The Independent-Samples T Test

One-Way Between-Groups Anova

One-Way Within-Groups Anova

Two-Way Between-Groups Anova

Correlation

Regression

Chi-Square Tess

Choosing and Reporting Statistics

Filters

A normal distribution is _, while a skewed distribution is _.