Question 1

If a frequency distribution is presented in a polygon,then the scores were measured on an interval or a ratio scale.

Accepted Answer

A) True 
 B)False  True

Question 2

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  False

Question 3

For the following scores
a.construct a frequency distribution table.
b.sketch a histogram of the frequency distribution.6, 4, 3, 5, 4, 2, 4
5, 4, 6, 1, 4, 5, 2

Accepted Answer

a. $$\begin{array} { c c } 
X & \mathrm { f } \
\hline 6 & 2 \
5 & 3 \
4 & 5 \
3 & 1 \
2 & 2 \
1 & 1
\end{array}$$
b.

Question 4

For the following distribution,11 people have scores greater than X = 14.
 $$\begin{array} { c c } 
X & \mathrm { f } \
\hline 20 - 24 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1
\end{array}$$

Accepted Answer

A) True 
 B)False

Question 5

In a grouped frequency distribution table,one interval is identified as 30-34.This interval has a width of 5 points.

Accepted Answer

A) True 
 B)False

Question 6

If a distribution of scores is shown in a bar graph,you know that the scores were measured on a(n)_________ scale of measurement.

Accepted Answer

A) nominal or ordinal 
B) ordinal or interval 
C) interval or ratio 
D) discrete or continuous 
A) nominal or ordinal 
B) ordinal or interval 
C) interval or ratio 
D) discrete or continuous

Question 7

The normal distribution is an example of a symmetrical distribution.

Accepted Answer

A) True 
 B)False

Question 8

A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3.If these scores are placed in a frequency distribution table,how many X values will be listed in the first column?

Accepted Answer

A) 8 
B) 9 
C) 10 
D) It depends on whether any scores have a zero frequency. 
A) 8 
B) 9 
C) 10 
D) It depends on whether any scores have a zero frequency.

Question 9

A space is left between adjacent bars in a bar graph.

Accepted Answer

A) True 
 B)False

Question 10

For the following distribution,how many people had scores less than X = 19? $$\begin{array} { l l } 
X & \text { f } \
\hline 20 - 24 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1
\end{array}$$

Accepted Answer

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

Question 11

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 12

For the following data,N = _____. $$\begin{array} { c c } 
X & \mathrm { f } \
\hline 4 & 2 \
3 & 4 \
2 & 3 \
1 & 2
\end{array}$$

Accepted Answer

A) 10 
B) 11 
C) 28 
D) Cannot be determined from the table 
A) 10 
B) 11 
C) 28 
D) Cannot be determined from the table

Question 13

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 14

Briefly explain what information is available in a regular frequency distribution table that is not available in a grouped table.

Accepted Answer

A regular table identifies eac

Question 15

A frequency distribution graph represents frequencies with vertical bars without space between them.What scale of measurement was used to measure the scores?

Accepted Answer

A) Nominal 
B) Ordinal 
C) Nominal or ordinal 
D) Interval or ratio 
A) Nominal 
B) Ordinal 
C) Nominal or ordinal 
D) Interval or ratio

Question 16

What is the shape of the distribution for the following set of data? $$\begin{array} { l l } 
X   & \mathrm { f } \
\hline 5 & 1 \
4 & 1 \
3 & 2 \
2 & 4 \
1 & 5
\end{array}$$

Accepted Answer

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

Question 17

If a set of scores covers a range of 80 points,then the grouped frequency table for the scores should use an interval width of 8 points.

Accepted Answer

A) True 
 B)False

Question 18

For the following frequency distribution,what is ?X? $$\begin{array} { l l } 
X & \mathrm { f } \
\hline 30 - 34 & 1 \
25 - 29 & 1 \
20 - 24 & 3 \
15 - 19 & 2 \
10 - 14 & 1
\end{array}$$

Accepted Answer

A) 8 
B) 90 
C) 110 
D) Cannot be determined 
A) 8 
B) 90 
C) 110 
D) Cannot be determined

Question 19

For the following distribution,what is ΣX?

Accepted Answer

A) ΣX = 10 
B) ΣX = 15 
C) ΣX = 21 
D) ΣX = 23 
A) ΣX = 10 
B) ΣX = 15 
C) ΣX = 21 
D) ΣX = 23

Question 20

In the following distribution,the scores are grouped into class intervals that are each 5 points wide.	
 $$\begin{array} { c c } 
X & f \
\hline 20 - 24 & 2 \
15 - 19 & 5 \
10 - 14 & 4 \
5 - 9 & 1
\end{array}$$

Accepted Answer

A) True 
 B)False

If a frequency distribution is presented in a polygon,then the scores were measured on an interval or a ratio scale.

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

For the following scores a.construct a frequency distribution table. b.sketch a histogram of the frequency distribution.6, 4, 3, 5, 4, 2, 4 5, 4, 6, 1, 4, 5, 2

For the following distribution,11 people have scores greater than X = 14. X 20-24 2 15-19 5 10-14 4 5-9 1

In a grouped frequency distribution table,one interval is identified as 30-34.This interval has a width of 5 points.

If a distribution of scores is shown in a bar graph,you know that the scores were measured on a(n)_________ scale of measurement.

The normal distribution is an example of a symmetrical distribution.

A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3.If these scores are placed in a frequency distribution table,how many X values will be listed in the first column?

A space is left between adjacent bars in a bar graph.

For the following distribution,how many people had scores less than X = 19? X f 20-24 2 15-19 5 10-14 4 5-9 1

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

For the following data,N = _____. X 4 2 3 4 2 3 1 2

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.

Briefly explain what information is available in a regular frequency distribution table that is not available in a grouped table.

A frequency distribution graph represents frequencies with vertical bars without space between them.What scale of measurement was used to measure the scores?

What is the shape of the distribution for the following set of data? X 5 1 4 1 3 2 2 4 1 5

If a set of scores covers a range of 80 points,then the grouped frequency table for the scores should use an interval width of 8 points.

For the following frequency distribution,what is ?X? X 30-34 1 25-29 1 20-24 3 15-19 2 10-14 1

For the following distribution,what is ΣX?

In the following distribution,the scores are grouped into class intervals that are each 5 points wide. X f 20-24 2 15-19 5 10-14 4 5-9 1

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.

If a frequency distribution is presented in a polygon,then the scores were measured on an interval or a ratio scale.

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

For the following scores a.construct a frequency distribution table. b.sketch a histogram of the frequency distribution.6, 4, 3, 5, 4, 2, 4 5, 4, 6, 1, 4, 5, 2

For the following distribution,11 people have scores greater than X = 14. X 20-24 2 15-19 5 10-14 4 5-9 1

In a grouped frequency distribution table,one interval is identified as 30-34.This interval has a width of 5 points.

If a distribution of scores is shown in a bar graph,you know that the scores were measured on a(n)_________ scale of measurement.

The normal distribution is an example of a symmetrical distribution.

A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3.If these scores are placed in a frequency distribution table,how many X values will be listed in the first column?

A space is left between adjacent bars in a bar graph.

For the following distribution,how many people had scores less than X = 19? X f 20-24 2 15-19 5 10-14 4 5-9 1

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

For the following data,N = _____. X 4 2 3 4 2 3 1 2

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.

Briefly explain what information is available in a regular frequency distribution table that is not available in a grouped table.

A frequency distribution graph represents frequencies with vertical bars without space between them.What scale of measurement was used to measure the scores?

What is the shape of the distribution for the following set of data? X 5 1 4 1 3 2 2 4 1 5

If a set of scores covers a range of 80 points,then the grouped frequency table for the scores should use an interval width of 8 points.

For the following frequency distribution,what is ?X? X 30-34 1 25-29 1 20-24 3 15-19 2 10-14 1

For the following distribution,what is ΣX?

In the following distribution,the scores are grouped into class intervals that are each 5 points wide. X f 20-24 2 15-19 5 10-14 4 5-9 1

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