Question 1

For the following distribution of scores,?X = 18.
$$\begin{array} { c c } 
X & \mathrm { f } \
\hline 4 & 1 \
3 & 2 \
2 & 3 \
1 & 2
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 2

For the scores in the following table,what is the value of ?X²? $$\begin{array} { c c } 
\ X   & \mathrm { f } \
\hline 4 & 1 \
3 & 2 \
2 & 1 \
1 & 3
\end{array}$$

Accepted Answer

A) 30 
B) 41 
C) 65 
D) 225 
A) 30 
B) 41 
C) 65 
D) 225

Question 3

For the following distribution of scores,?X² = 92.
$$\begin{array} { c c } 
X & \mathrm { f } \
\hline 4 & 1 \
3 & 2 \
2 & 3 \
1 & 2
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 4

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 5

What kind of frequency distribution graph shows the frequencies as bars that are separated by spaces?

Accepted Answer

A) A bar graph 
B) A histogram 
C) A polygon 
D) All of these 
A) A bar graph 
B) A histogram 
C) A polygon 
D) All of these

Question 6

What is the shape of the distribution for the following set of data? Scores: 1,2,3,3,4,4,4 5,5,5,5,6

Accepted Answer

A) Symmetrical 
B) Positively skewed 
C) Negatively skewed 
D) Normal 
A) Symmetrical 
B) Positively skewed 
C) Negatively skewed 
D) Normal

Question 7

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 8

A sports historian recorded the number of times that the New York Yankees finished 1ˢᵗ,2ⁿᵈ,3ʳᵈ,and so on,in their division for the past 20 years.If the results are presented in a frequency distribution graph,then a histogram must be used.

Accepted Answer

A) True 
 B)False

Question 9

If a set of exam scores forms a symmetrical distribution,what can you likely conclude about the students' scores?

Accepted Answer

A) Most of the students had relatively high scores. 
B) Most of the students had relatively low scores. 
C) About an equal number of students had relatively high and relatively low scores. 
D) It is not possible to draw any conclusions about students' scores. 
A) Most of the students had relatively high scores. 
B) Most of the students had relatively low scores. 
C) About an equal number of students had relatively high and relatively low scores. 
D) It is not possible to draw any conclusions about students' scores.

Question 10

In a positively skewed distribution,the scores pile up on the left side of the distribution and taper off to the right.

Accepted Answer

A) True 
 B)False

Question 11

A biologist records the number of trout,bass,perch,and other types of fish caught in a local lake during a 2-week period.If the results are organized in a frequency distribution graph,what kind of graph should be used?

Accepted Answer

A) A bar graph 
B) A histogram 
C) A polygon 
D) Either a histogram or a polygon 
A) A bar graph 
B) A histogram 
C) A polygon 
D) Either a histogram or a polygon

Question 12

How many individual scores are in the following distribution?

Accepted Answer

A) N = 5 
B) N = 6 
C) N = 10 
D) cannot be determined 
A) N = 5 
B) N = 6 
C) N = 10 
D) cannot be determined

Question 13

If the following distribution were shown in a histogram,the width of the bar above the 15-19 interval would reach from _____ to _____. $$\begin{array} { c c } 
\hline X & \mathrm { f } \
\hline 20 - 24 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1
\end{array}$$

Accepted Answer

A) X = 14.5 to X = 19.5 
B) X = 15.5 to X = 18.5 
C) X = 15.5 to X = 19.5 
D) X = 15.0 to X = 19.0 
A) X = 14.5 to X = 19.5 
B) X = 15.5 to X = 18.5 
C) X = 15.5 to X = 19.5 
D) X = 15.0 to X = 19.0

Question 14

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 15

For the following distribution,what is the highest score? $$\begin{array} { l l } 
\frac { X } { } & \mathrm { f } \
\hline 20 - 24 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1
\end{array}$$

Accepted Answer

A) 5 
B) 20 
C) 24 
D) Cannot be determined 
A) 5 
B) 20 
C) 24 
D) Cannot be determined

Question 16

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

Accepted Answer

A) True 
 B)False

Question 17

For the following distribution of quiz scores,how many individuals had a score of X = 2? $$\begin{array} { l l } 
X & \text { f } \
\hline 5 & 6 \
4 & 5 \
3 & 5 \
2 & 3 \
1 & 2
\end{array}$$

Accepted Answer

A) 1 
B) 3 
C) 5 
D) Cannot be determined 
A) 1 
B) 3 
C) 5 
D) Cannot be determined

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

After recording the final grade (A,B,C,D,F)for each individual in a class of N = 26 students,the professor would like to display the grade distribution in a frequency distribution graph.What kind of graph should be used?

Accepted Answer

A) A bar graph 
B) A histogram 
C) A polygon 
D) Either a histogram or a polygon 
A) A bar graph 
B) A histogram 
C) A polygon 
D) Either a histogram or a polygon

Question 20

In a grouped frequency distribution,one interval is listed as 50-59.Assuming that the scores are measuring a continuous variable,what are the real limits for this interval?

Accepted Answer

A) 50 and 59 
B) 50.5 and 59.5 
C) 49.5 and 59.5 
D) 49.5 and 60.5 
A) 50 and 59 
B) 50.5 and 59.5 
C) 49.5 and 59.5 
D) 49.5 and 60.5

For the following distribution of scores,?X = 18. X 4 1 3 2 2 3 1 2

For the scores in the following table,what is the value of ?X²? \ X 4 1 3 2 2 1 1 3

For the following distribution of scores,?X² = 92. X 4 1 3 2 2 3 1 2

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.

What kind of frequency distribution graph shows the frequencies as bars that are separated by spaces?

What is the shape of the distribution for the following set of data? Scores: 1,2,3,3,4,4,4 5,5,5,5,6

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 sports historian recorded the number of times that the New York Yankees finished 1ˢᵗ,2ⁿᵈ,3ʳᵈ,and so on,in their division for the past 20 years.If the results are presented in a frequency distribution graph,then a histogram must be used.

If a set of exam scores forms a symmetrical distribution,what can you likely conclude about the students' scores?

In a positively skewed distribution,the scores pile up on the left side of the distribution and taper off to the right.

A biologist records the number of trout,bass,perch,and other types of fish caught in a local lake during a 2-week period.If the results are organized in a frequency distribution graph,what kind of graph should be used?

How many individual scores are in the following distribution?

If the following distribution were shown in a histogram,the width of the bar above the 15-19 interval would reach from _ to _. X 20-24 2 15-19 5 10-14 4 5-9 1

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

For the following distribution,what is the highest score? 20-24 2 15-19 5 10-14 4 5-9 1

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

For the following distribution of quiz scores,how many individuals had a score of X = 2? X f 5 6 4 5 3 5 2 3 1 2

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.

After recording the final grade (A,B,C,D,F)for each individual in a class of N = 26 students,the professor would like to display the grade distribution in a frequency distribution graph.What kind of graph should be used?

In a grouped frequency distribution,one interval is listed as 50-59.Assuming that the scores are measuring a continuous variable,what are the real limits for this interval?

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 and Two-Factor Analysis of Variance

Correlation and Regression.

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

Filters

Exam 2: Frequency Distributions.

For the following distribution of scores,?X = 18. X 4 1 3 2 2 3 1 2

For the scores in the following table,what is the value of ?X²? \ X 4 1 3 2 2 1 1 3

For the following distribution of scores,?X² = 92. X 4 1 3 2 2 3 1 2

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.

What kind of frequency distribution graph shows the frequencies as bars that are separated by spaces?

What is the shape of the distribution for the following set of data? Scores: 1,2,3,3,4,4,4 5,5,5,5,6

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 sports historian recorded the number of times that the New York Yankees finished 1ˢᵗ,2ⁿᵈ,3ʳᵈ,and so on,in their division for the past 20 years.If the results are presented in a frequency distribution graph,then a histogram must be used.

If a set of exam scores forms a symmetrical distribution,what can you likely conclude about the students' scores?

In a positively skewed distribution,the scores pile up on the left side of the distribution and taper off to the right.

A biologist records the number of trout,bass,perch,and other types of fish caught in a local lake during a 2-week period.If the results are organized in a frequency distribution graph,what kind of graph should be used?

How many individual scores are in the following distribution?

If the following distribution were shown in a histogram,the width of the bar above the 15-19 interval would reach from _____ to _____. X 20-24 2 15-19 5 10-14 4 5-9 1

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

For the following distribution,what is the highest score? 20-24 2 15-19 5 10-14 4 5-9 1

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

For the following distribution of quiz scores,how many individuals had a score of X = 2? X f 5 6 4 5 3 5 2 3 1 2

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.

After recording the final grade (A,B,C,D,F)for each individual in a class of N = 26 students,the professor would like to display the grade distribution in a frequency distribution graph.What kind of graph should be used?

In a grouped frequency distribution,one interval is listed as 50-59.Assuming that the scores are measuring a continuous variable,what are the real limits for this interval?

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 and Two-Factor Analysis of Variance

Correlation and Regression.

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

Filters

If the following distribution were shown in a histogram,the width of the bar above the 15-19 interval would reach from _ to _. X 20-24 2 15-19 5 10-14 4 5-9 1