Question 1

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 2

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

Accepted Answer

A)  5 
B)  10 
C)  11 
D)  cannot be determined 
A)  5 
B)  10 
C)  11 
D)  cannot be determined

Question 3

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

Accepted Answer

A)  15 
B)  21 
C)  30 
D)  cannot determine 
A)  15 
B)  21 
C)  30 
D)  cannot determine

Question 4

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

Accepted Answer

A)  5 
B)  7 
C)  11 
D)  cannot be determined 
A)  5 
B)  7 
C)  11 
D)  cannot be determined

Question 5

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 6

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

Accepted Answer

A)  $ 40 \% $ 
B)  $ 60 \% $ 
C)  $ 75 \% $ 
D)  $ 90 \% $ 
A)  $ 40 \% $ 
B)  $ 60 \% $ 
C)  $ 75 \% $ 
D)  $ 90 \% $

Question 7

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 8

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

Accepted Answer

A)  $ X=70 $ 
B)  $ X=74 $ 
C)  $ X=90 $ 
D)  cannot be determined 
A)  $ X=70 $ 
B)  $ X=74 $ 
C)  $ X=90 $ 
D)  cannot be determined

Question 9

The normal distribution is an example of a symmetrical distribution.

Accepted Answer

A) True 
 B)False

Question 10

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

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

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

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

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

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

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

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

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

The normal distribution is an example of a symmetrical distribution.

For the following distribution of scores, $\sum$ X = 18. X f 4 1 3 2 2 3 1 2

Introduction to Statistics

Central Tendency

Variability

Z-Scores

Probability

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 Anova

Two-Factor Analysis of Variance

Correlation

Introduction to Regression

Chi-Square Tests

The Binomial Test

Choosing the Right Statistics

Filters

Exam 2: Frequency Distributions

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

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

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

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

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

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

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

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

The normal distribution is an example of a symmetrical distribution.

For the following distribution of scores, ∑\sum∑ X = 18. X f 4 1 3 2 2 3 1 2

Introduction to Statistics

Central Tendency

Variability

Z-Scores

Probability

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 Anova

Two-Factor Analysis of Variance

Correlation

Introduction to Regression

Chi-Square Tests

The Binomial Test

Choosing the Right Statistics

Filters

For the following distribution of scores, $\sum$ X = 18. X f 4 1 3 2 2 3 1 2