Question 1

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

Accepted Answer

A) True 
 B)False

Question 2

For the following frequency distribution of exam scores, what is the lowest score on the exam?

Accepted Answer

A)    X=70 X=70 X=70 
B)    X=74 X=74 X=74 
C)    X=90 X=90 X=90 
D)   cannot be determined E) C) and D)
F) None of the above

Question 3

For the following distribution, how many people had scores greater than X = 14? 
 Xf20−25215−19510−1445−91\begin{array}{cc}\mathrm{X} & \mathrm{f} \\hline 20-25 & 2 \15-19 & 5 \10-14 & 4 \5-9 & 1\end{array}X20−2515−1910−145−9​f2541​​

Accepted Answer

A)   5
B)   7
C)   11
D)   cannot be determined E) A) and D)
F) C) and D)

Question 4

A stem and leaf display does not provide enough information to obtain a complete listing of the original set of scores.

Accepted Answer

A) True 
 B)False

Question 5

A grouped frequency distribution table lists one interval as, 20-29.The width of this interval is 9 points.

Accepted Answer

A) True 
 B)False

Question 6

For the distribution in the following table, what is the percentile rank for X = 24.5?

Accepted Answer

A)    40% 40 \% 40% 
B)    60% 60 \% 60% 
C)    75% 75 \% 75% 
D)    90% 90 \% 90%  E) A) and D)
F) A) and C)

Question 7

For the distribution in the following graph, what is the value of ΣX?

Accepted Answer

A)   15
B)   21
C)   30
D)   cannot determineE) B) and D)
F) A) and B)

Question 8

The normal distribution is an example of a symmetrical distribution.

Accepted Answer

A) True 
 B)False

Question 9

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 ratioE) A) and B)
F) A) and C)

Question 10

For the following distribution, how many people had scores less than X = 19?  Xf20−25215−19510−1445−91\begin{array}{cc}\mathrm{X} & \mathrm{f} \\hline 20-25 & 2 \15-19 & 5 \10-14 & 4 \5-9 & 1 \\hline\end{array}X20−2515−1910−145−9​f2541​​

Accepted Answer

A)   5
B)   10
C)   11
D)   cannot be determined E) All of the above
F) None of the above

Exam 2: Frequency Distributions

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

Correct Answer
verified

For the distribution in the following graph, what is the value of ΣX?

Correct Answer
verified

A stem and leaf display does not provide enough information to obtain a complete listing of the original set of scores.

Correct Answer
verified

For the following frequency distribution of exam scores, what is the lowest score on the exam?

Correct Answer
verified

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

Correct Answer
verified

The normal distribution is an example of a symmetrical distribution.

Correct Answer
verified

A grouped frequency distribution table lists one interval as, 20-29.The width of this interval is 9 points.

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

For the distribution in the following table, what is the percentile rank for X = 24.5? $For the distribution in the following table, what is the percentile rank for X = 24.5? A) 40 \% B) 60 \% C) 75 \% D) 90 \%$

Correct Answer
verified

Exam 2: Frequency Distributions

For the following distribution, how many people had scores less than X = 19? Xf20−25215−19510−1445−91\begin{array}{cc}\mathrm{X} & \mathrm{f} \\\hline 20-25 & 2 \\15-19 & 5 \\10-14 & 4 \\5-9 & 1 \\\hline\end{array}X20−2515−1910−145−9​f2541​​

Correct AnswerverifiedShow Answer

For the distribution in the following graph, what is the value of ΣX?

Correct AnswerverifiedShow Answer

A stem and leaf display does not provide enough information to obtain a complete listing of the original set of scores.

Correct AnswerverifiedShow Answer

For the following frequency distribution of exam scores, what is the lowest score on the exam?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The normal distribution is an example of a symmetrical distribution.

Correct AnswerverifiedShow Answer

A grouped frequency distribution table lists one interval as, 20-29.The width of this interval is 9 points.

Correct AnswerverifiedShow Answer

For the following distribution, how many people had scores greater than X = 14? Xf20−25215−19510−1445−91\begin{array}{cc}\mathrm{X} & \mathrm{f} \\\hline 20-25 & 2 \\15-19 & 5 \\10-14 & 4 \\5-9 & 1\end{array}X20−2515−1910−145−9​f2541​​

Correct AnswerverifiedShow Answer

For the following distribution of scores, ∑\sum∑ X = 18. Xf41322312\begin{array}{ll}X & f \\\hline 4 & 1 \\3 & 2 \\2 & 3 \\1 & 2\end{array}X4321​f1232​​

Correct AnswerverifiedShow Answer

For the distribution in the following table, what is the percentile rank for X = 24.5?

Correct AnswerverifiedShow Answer

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

Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

For the distribution in the following table, what is the percentile rank for X = 24.5? $For the distribution in the following table, what is the percentile rank for X = 24.5? A) 40 \% B) 60 \% C) 75 \% D) 90 \%$

Correct Answer
verified