Question 1

In a grouped frequency distribution table,the top value in each class interval should be a multiple of the interval width.​

Accepted Answer

A) True 
 B)False

Question 2

For the following distribution of scores,20% of the individuals have scores of X = 1.? $$\begin{array} { l l } 
\mathrm { X } & \mathrm { f } \
\hline 5 & 2 \
4 & 8 \
3 & 5 \
2 & 3 \
1 & 2 \
\hline
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 3

In a distribution with positive skew,scores with the highest frequencies are ____.​

Accepted Answer

A) ​on the right side of the distribution 
B) ​on the left side of the distribution 
C) ​in the middle of the distribution 
D) ​represented at two distinct peaks 
A) ​on the right side of the distribution 
B) ​on the left side of the distribution 
C) ​in the middle of the distribution 
D) ​represented at two distinct peaks

Question 4

For the distribution in the following table,the 80th percentile is X = 24.? $$\begin{array} { l r } 
X & c \% \
\hline 25 - 29 & 100 \% \
20 - 24 & 80 \% \
15 - 19 & 20 \% \
\hline
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 5

In February in New York,the daily high temperatures are typically low with only a few relatively warm days.A frequency distribution showing the daily high temperatures would probably form a negatively skewed distribution.​

Accepted Answer

A) True 
 B)False

Question 6

A group of quiz scores ranges from 3 to 10,but no student had a score of X = 5.If the scores are put in a frequency distribution table,X = 5 would not be listed in the X column.​

Accepted Answer

A) True 
 B)False

Question 7

For the following distribution,what is the highest possible score?? $$\begin{array} { l l } 
\mathrm { X } & \mathrm { f } \
20 - 25 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1 \
\hline
\end{array}$$

Accepted Answer

A) ?5 
B) ?20 
C) ?25 
D) ?26 
A) ?5 
B) ?20 
C) ?25 
D) ?26

Question 8

If it is appropriate to present a distribution of scores in a polygon,then it would also be appropriate to present the scores in a bar graph.​

Accepted Answer

A) True 
 B)False

Question 9

A histogram is constructed so that adjacent bars touch.​

Accepted Answer

A) True 
 B)False

Question 10

For the following distribution,how many people had scores less than X = 20?? $$\begin{array} { l l } 
\mathrm { X } & \mathrm { f } \
20 - 25 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1 \
\hline
\end{array}$$

Accepted Answer

A) ?5 
B) ?10 
C) ?11 
D) ?12 
A) ?5 
B) ?10 
C) ?11 
D) ?12

Question 11

A grouped frequency distribution table does not provide enough information to obtain a complete listing of the original set of scores.

Accepted Answer

A) True 
 B)False

Question 12

For the following frequency distribution of exam scores,how many students had scores lower than X = 80?? $$\begin{array} { l l } 
\mathrm { X } & \mathrm { f } \
\hline 90 - 94 & 3 \
85 - 89 & 4 \
80 - 84 & 5 \
75 - 79 & 2 \
70 - 74 & 1 \
\hline
\end{array}$$

Accepted Answer

A) ?2 
B) ?3 
C) ?7 
D) ?8 
A) ?2 
B) ?3 
C) ?7 
D) ?8

Question 13

If a frequency distribution is shown in a bar graph,what scale was used to measure the scores?​

Accepted Answer

A) ​nominal 
B) ​nominal or ordinal 
C) ​ratio 
D) ​interval or ratio 
A) ​nominal 
B) ​nominal or ordinal 
C) ​ratio 
D) ​interval or ratio

Question 14

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the data were organized in a frequency distribution table,the first column would be a list of movies.​

Accepted Answer

A) True 
 B)False

Question 15

For the following frequency distribution of exam scores,what is the lowest possible reported score on the exam?? $$\begin{array} { l l } 
\mathrm { X } & \mathrm { f } \
\hline 90 - 94 & 3 \
85 - 89 & 4 \
80 - 84 & 5 \
75 - 79 & 2 \
70 - 74 & 1 \
\hline
\end{array}$$

Accepted Answer

A) ?x = 70 
B) ?x = 74 
C) ?x = 90 
D) ?x=94 
A) ?x = 70 
B) ?x = 74 
C) ?x = 90 
D) ?x=94

Question 16

The normal distribution is ____.​

Accepted Answer

A) ​asymmetric 
B) ​skewed to the right 
C) ​skewed to the left 
D) ​symmetric 
A) ​asymmetric 
B) ​skewed to the right 
C) ​skewed to the left 
D) ​symmetric

Question 17

For the distribution in the following table,what is the 50th percentile?? $$\begin{array} { l l } 
X & c \% \
50 - 59 & 100 \% \
40 - 49 & 90 \% \
30 - 39 & 60 \% \
20 - 29 & 20 \% \
\hline
\end{array}$$

Accepted Answer

A)  X = 32? 
B) ? X = 35 
C)  ?X = 35 
D)  ?X = 39 
A)  X = 32? 
B) ? X = 35 
C)  ?X = 35 
D)  ?X = 39

Question 18

A set of scores ranges from a low of X = 18 to a high of X = 98.If the scores are put in a grouped frequency distribution table with an interval width of 10 points,the bottom interval should be 10-19.​

Accepted Answer

A) True 
 B)False

Question 19

​ $$\begin{array} { l | l } 
8 & 314 \
7 & 945 \
6 & 7042 \
5 & 68 \
4 & 14
\end{array}$$ Figure 2-3
-If the following scores were placed in a stem and leaf display,how many leaves would be associated with a stem of 6??Scores: 26,45,62,11,21,55,6664,55,46,38,41,27,2936,51,32,25,34,44,59?

Accepted Answer

A) ?1 
B) ?2 
C) ?3 
D) ?4 
A) ?1 
B) ?2 
C) ?3 
D) ?4

Question 20

If a set of exam scores forms a negatively skewed distribution,it suggests that the majority of the students did not score well on the exam.​

Accepted Answer

A) True 
 B)False

In a grouped frequency distribution table,the top value in each class interval should be a multiple of the interval width.

For the following distribution of scores,20% of the individuals have scores of X = 1.? 5 2 4 8 3 5 2 3 1 2

In a distribution with positive skew,scores with the highest frequencies are ____.

For the distribution in the following table,the 80th percentile is X = 24.? X c\% 25-29 100\% 20-24 80\% 15-19 20\%

In February in New York,the daily high temperatures are typically low with only a few relatively warm days.A frequency distribution showing the daily high temperatures would probably form a negatively skewed distribution.

A group of quiz scores ranges from 3 to 10,but no student had a score of X = 5.If the scores are put in a frequency distribution table,X = 5 would not be listed in the X column.

For the following distribution,what is the highest possible score?? 20-25 2 15-19 5 10-14 4 5-9 1

If it is appropriate to present a distribution of scores in a polygon,then it would also be appropriate to present the scores in a bar graph.

A histogram is constructed so that adjacent bars touch.

For the following distribution,how many people had scores less than X = 20?? 20-25 2 15-19 5 10-14 4 5-9 1

A grouped frequency distribution table does not provide enough information to obtain a complete listing of the original set of scores.

For the following frequency distribution of exam scores,how many students had scores lower than X = 80?? 90-94 3 85-89 4 80-84 5 75-79 2 70-74 1

If a frequency distribution is shown in a bar graph,what scale was used to measure the scores?

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the data were organized in a frequency distribution table,the first column would be a list of movies.

For the following frequency distribution of exam scores,what is the lowest possible reported score on the exam?? 90-94 3 85-89 4 80-84 5 75-79 2 70-74 1

The normal distribution is ____.

For the distribution in the following table,what is the 50^th percentile?? X c\% 50-59 100\% 40-49 90\% 30-39 60\% 20-29 20\%

A set of scores ranges from a low of X = 18 to a high of X = 98.If the scores are put in a grouped frequency distribution table with an interval width of 10 points,the bottom interval should be 10-19.

8 314 7 945 6 7042 5 68 4 14 Figure 2-3 -If the following scores were placed in a stem and leaf display,how many leaves would be associated with a stem of 6??Scores: 26,45,62,11,21,55,6664,55,46,38,41,27,2936,51,32,25,34,44,59?

If a set of exam scores forms a negatively skewed distribution,it suggests that the majority of the students did not score well on the exam.

Introduction to Statistics

Central Tendency

Variability

Z-Scores: Location of Scores and Standardized Distributions

Probability

Probability and Samples: the Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

The Binomial Test

Filters

Exam 2: Frequency Distributions

In a grouped frequency distribution table,the top value in each class interval should be a multiple of the interval width.​

For the following distribution of scores,20% of the individuals have scores of X = 1.? 5 2 4 8 3 5 2 3 1 2

In a distribution with positive skew,scores with the highest frequencies are ____.​

For the distribution in the following table,the 80th percentile is X = 24.? X c\% 25-29 100\% 20-24 80\% 15-19 20\%

In February in New York,the daily high temperatures are typically low with only a few relatively warm days.A frequency distribution showing the daily high temperatures would probably form a negatively skewed distribution.​

A group of quiz scores ranges from 3 to 10,but no student had a score of X = 5.If the scores are put in a frequency distribution table,X = 5 would not be listed in the X column.​

For the following distribution,what is the highest possible score?? 20-25 2 15-19 5 10-14 4 5-9 1

If it is appropriate to present a distribution of scores in a polygon,then it would also be appropriate to present the scores in a bar graph.​

A histogram is constructed so that adjacent bars touch.​

For the following distribution,how many people had scores less than X = 20?? 20-25 2 15-19 5 10-14 4 5-9 1

A grouped frequency distribution table does not provide enough information to obtain a complete listing of the original set of scores.

For the following frequency distribution of exam scores,how many students had scores lower than X = 80?? 90-94 3 85-89 4 80-84 5 75-79 2 70-74 1

If a frequency distribution is shown in a bar graph,what scale was used to measure the scores?​

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the data were organized in a frequency distribution table,the first column would be a list of movies.​

For the following frequency distribution of exam scores,what is the lowest possible reported score on the exam?? 90-94 3 85-89 4 80-84 5 75-79 2 70-74 1

The normal distribution is ____.​

For the distribution in the following table,what is the 50th percentile?? X c\% 50-59 100\% 40-49 90\% 30-39 60\% 20-29 20\%

A set of scores ranges from a low of X = 18 to a high of X = 98.If the scores are put in a grouped frequency distribution table with an interval width of 10 points,the bottom interval should be 10-19.​

​ 8 314 7 945 6 7042 5 68 4 14 Figure 2-3 -If the following scores were placed in a stem and leaf display,how many leaves would be associated with a stem of 6??Scores: 26,45,62,11,21,55,6664,55,46,38,41,27,2936,51,32,25,34,44,59?

If a set of exam scores forms a negatively skewed distribution,it suggests that the majority of the students did not score well on the exam.​

Introduction to Statistics

Central Tendency

Variability

Z-Scores: Location of Scores and Standardized Distributions

Probability

Probability and Samples: the Distribution of Sample Means

Introduction to Hypothesis Testing

Introduction to the T Statistic

The T Test for Two Independent Samples

The T Test for Two Related Samples

Introduction to Analysis of Variance

Repeated-Measures Analysis of Variance Anova

Two-Factor Analysis of Variance Independent Measures

Correlation

Introduction to Regression

The Chi-Square Statistic: Tests for Goodness of Fit and Independence

The Binomial Test

Filters

In a grouped frequency distribution table,the top value in each class interval should be a multiple of the interval width.

In a distribution with positive skew,scores with the highest frequencies are ____.

In February in New York,the daily high temperatures are typically low with only a few relatively warm days.A frequency distribution showing the daily high temperatures would probably form a negatively skewed distribution.

A group of quiz scores ranges from 3 to 10,but no student had a score of X = 5.If the scores are put in a frequency distribution table,X = 5 would not be listed in the X column.

If it is appropriate to present a distribution of scores in a polygon,then it would also be appropriate to present the scores in a bar graph.

A histogram is constructed so that adjacent bars touch.

If a frequency distribution is shown in a bar graph,what scale was used to measure the scores?

A researcher surveys a sample of n = 200 college students and asks each person to identify his or her favorite movie from the past year.If the data were organized in a frequency distribution table,the first column would be a list of movies.

The normal distribution is ____.

For the distribution in the following table,what is the 50^th percentile?? X c\% 50-59 100\% 40-49 90\% 30-39 60\% 20-29 20\%

A set of scores ranges from a low of X = 18 to a high of X = 98.If the scores are put in a grouped frequency distribution table with an interval width of 10 points,the bottom interval should be 10-19.

8 314 7 945 6 7042 5 68 4 14 Figure 2-3 -If the following scores were placed in a stem and leaf display,how many leaves would be associated with a stem of 6??Scores: 26,45,62,11,21,55,6664,55,46,38,41,27,2936,51,32,25,34,44,59?

If a set of exam scores forms a negatively skewed distribution,it suggests that the majority of the students did not score well on the exam.