Question 1

Histograms typically provide frequencies for _____ data.

Accepted Answer

A)  nominal 
B)  ordinal 
C)  scale 
D)  discrete 
A)  nominal 
B)  ordinal 
C)  scale 
D)  discrete

Question 2

Imagine that 180 people out of a total of 705 people surveyed reported owning a smartphone.What percentage of people surveyed own a smartphone?

Accepted Answer

A)  12.50 
B)  18.94 
C)  25.53 
D)  31.68 
A)  12.50 
B)  18.94 
C)  25.53 
D)  31.68

Question 3

In a frequency polygon, the y-axis represents values or midpoints of intervals.

Accepted Answer

A) True 
 B)False

Question 4

A frequency polygon is similar to a histogram EXCEPT that:

Accepted Answer

A)  a frequency polygon can be drawn for a greater range of data values. 
B)  the polygon is typically used for ordinal rather than interval data. 
C)  lines are used to connect the midpoint of each interval. 
D)  in the polygon, frequencies appear on the x-axis. 
A)  a frequency polygon can be drawn for a greater range of data values. 
B)  the polygon is typically used for ordinal rather than interval data. 
C)  lines are used to connect the midpoint of each interval. 
D)  in the polygon, frequencies appear on the x-axis.

Question 5

In a side-by-side stem-and-leaf plot, data from unrelated variables are often presented so that they might be compared.

Accepted Answer

A) True 
 B)False

Question 6

Histograms are typically used to depict _____, whereas bar graphs are typically used to depict _____.

Accepted Answer

A)  scale data; nominal data 
B)  nominal data; interval data 
C)  means; frequencies 
D)  interval data; scale data 
A)  scale data; nominal data 
B)  nominal data; interval data 
C)  means; frequencies 
D)  interval data; scale data

Question 7

When constructing a frequency table, the first step is to:

Accepted Answer

A)  Divide the total number of participants by the total number of participants in a group and then multiply by 100. 
B)  Divide the total number of participants in a group by the total number of participants and then multiply by 100. 
C)  Subtract the total number of participants in a group from the total number of participants and then multiply by 100. 
D)  Add the total number of participants in all groups and divide by 100. 
A)  Divide the total number of participants by the total number of participants in a group and then multiply by 100. 
B)  Divide the total number of participants in a group by the total number of participants and then multiply by 100. 
C)  Subtract the total number of participants in a group from the total number of participants and then multiply by 100. 
D)  Add the total number of participants in all groups and divide by 100.

Question 8

The line drawn in a frequency polygon should float above the x-axis, never touching the axis.

Accepted Answer

A) True 
 B)False

Question 9

In a frequency polygon, the x-axis represents frequencies.

Accepted Answer

A) True 
 B)False

Question 10

A positive skew has a long tail to the _____ of the distribution, while a negative skew has a long tail to the _____ of the distribution.

Accepted Answer

A)  left; right 
B)  right; left 
C)  right; right 
D)  left; left 
A)  left; right 
B)  right; left 
C)  right; right 
D)  left; left

Question 11

A stem-and-leaf plot offers an advantage over a histogram in that it shows the data both visually and numerically, whereas a histogram displays the data visually only.

Accepted Answer

A) True 
 B)False

Question 12

Normal distributions are nonsymmetric and inherently have no skew.

Accepted Answer

A) True 
 B)False

Question 13

A _____ visually depicts data based on intervals rather than frequencies for specific values.

Accepted Answer

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

Question 14

What type of graph displays individual data points of one variable both numerically and visually?

Accepted Answer

A)  histogram 
B)  frequency polygon 
C)  stem-and-leaf plot 
D)  frequency table 
A)  histogram 
B)  frequency polygon 
C)  stem-and-leaf plot 
D)  frequency table

Question 15

A histogram places frequency on the y-axis and variable values on the x-axis.

Accepted Answer

A) True 
 B)False

Question 16

When looking at a distribution of data with a possible extreme observation, it is important to keep in mind that the extreme observation may _____ the data.

Accepted Answer

A)  skew 
B)  floor 
C)  restrict 
D)  expand 
A)  skew 
B)  floor 
C)  restrict 
D)  expand

Question 17

In a frequency polygon, the y-axis represents the:

Accepted Answer

A)  midpoint for every interval. 
B)  frequencies. 
C)  raw scores. 
D)  total number of participants. 
A)  midpoint for every interval. 
B)  frequencies. 
C)  raw scores. 
D)  total number of participants.

Question 18

Mark is looking at a histogram depicting students placed in various high schools.In this histogram, the x-axis most likely represents the _____ while the y-axis most likely represents the _____.

Accepted Answer

A)  values of the variable "high school"; frequencies or number of students 
B)  frequencies or number of students; values of the variable "high school" 
C)  total number of students; frequencies 
D)  number of extreme observations; total number of students 
A)  values of the variable "high school"; frequencies or number of students 
B)  frequencies or number of students; values of the variable "high school" 
C)  total number of students; frequencies 
D)  number of extreme observations; total number of students

Question 19

Professor Kellogg calculates the grades on the first exam for her statistics class.She finds that students did really well, with most students scoring 98 or higher.What type of distribution is Professor Kellogg MOST likely to have?

Accepted Answer

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

Question 20

Negatively skewed distributions often result from:

Accepted Answer

A)  a ceiling effect. 
B)  a floor effect. 
C)  unimodal curves. 
D)  a symmetrical distribution. 
A)  a ceiling effect. 
B)  a floor effect. 
C)  unimodal curves. 
D)  a symmetrical distribution.

Histograms typically provide frequencies for _____ data.

Imagine that 180 people out of a total of 705 people surveyed reported owning a smartphone.What percentage of people surveyed own a smartphone?

In a frequency polygon, the y-axis represents values or midpoints of intervals.

A frequency polygon is similar to a histogram EXCEPT that:

In a side-by-side stem-and-leaf plot, data from unrelated variables are often presented so that they might be compared.

Histograms are typically used to depict _, whereas bar graphs are typically used to depict _.

When constructing a frequency table, the first step is to:

The line drawn in a frequency polygon should float above the x-axis, never touching the axis.

In a frequency polygon, the x-axis represents frequencies.

A positive skew has a long tail to the _ of the distribution, while a negative skew has a long tail to the _ of the distribution.

A stem-and-leaf plot offers an advantage over a histogram in that it shows the data both visually and numerically, whereas a histogram displays the data visually only.

Normal distributions are nonsymmetric and inherently have no skew.

A _____ visually depicts data based on intervals rather than frequencies for specific values.

What type of graph displays individual data points of one variable both numerically and visually?

A histogram places frequency on the y-axis and variable values on the x-axis.

When looking at a distribution of data with a possible extreme observation, it is important to keep in mind that the extreme observation may _____ the data.

In a frequency polygon, the y-axis represents the:

Mark is looking at a histogram depicting students placed in various high schools.In this histogram, the x-axis most likely represents the _ while the y-axis most likely represents the _.

Professor Kellogg calculates the grades on the first exam for her statistics class.She finds that students did really well, with most students scoring 98 or higher.What type of distribution is Professor Kellogg MOST likely to have?

Negatively skewed distributions often result from:

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

Histograms typically provide frequencies for _____ data.

Imagine that 180 people out of a total of 705 people surveyed reported owning a smartphone.What percentage of people surveyed own a smartphone?

In a frequency polygon, the y-axis represents values or midpoints of intervals.

A frequency polygon is similar to a histogram EXCEPT that:

In a side-by-side stem-and-leaf plot, data from unrelated variables are often presented so that they might be compared.

Histograms are typically used to depict _____, whereas bar graphs are typically used to depict _____.

When constructing a frequency table, the first step is to:

The line drawn in a frequency polygon should float above the x-axis, never touching the axis.

In a frequency polygon, the x-axis represents frequencies.

A positive skew has a long tail to the _____ of the distribution, while a negative skew has a long tail to the _____ of the distribution.

A stem-and-leaf plot offers an advantage over a histogram in that it shows the data both visually and numerically, whereas a histogram displays the data visually only.

Normal distributions are nonsymmetric and inherently have no skew.

A _____ visually depicts data based on intervals rather than frequencies for specific values.

What type of graph displays individual data points of one variable both numerically and visually?

A histogram places frequency on the y-axis and variable values on the x-axis.

When looking at a distribution of data with a possible extreme observation, it is important to keep in mind that the extreme observation may _____ the data.

In a frequency polygon, the y-axis represents the:

Mark is looking at a histogram depicting students placed in various high schools.In this histogram, the x-axis most likely represents the _____ while the y-axis most likely represents the _____.

Professor Kellogg calculates the grades on the first exam for her statistics class.She finds that students did really well, with most students scoring 98 or higher.What type of distribution is Professor Kellogg MOST likely to have?

Negatively skewed distributions often result from:

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

Histograms are typically used to depict _, whereas bar graphs are typically used to depict _.

A positive skew has a long tail to the _ of the distribution, while a negative skew has a long tail to the _ of the distribution.

Mark is looking at a histogram depicting students placed in various high schools.In this histogram, the x-axis most likely represents the _ while the y-axis most likely represents the _.