Question 1

What is the benefit of creating a grouped frequency distribution table rather than an ungrouped simple frequency distribution table?

Accepted Answer

In an ungrouped simple frequency distrib

Question 2

Compare and contrast positively skewed distributions and negatively skewed distributions and give an example of each.

Accepted Answer

Both positively skewed and negatively sk

Question 3

Skewed distributions

Accepted Answer

A)  are symmetrical. 
B)  are a type of normal distribution. 
C)  have scores that stack up at either the high or low end of the distribution. 
D)  both b and c are true. 
A)  are symmetrical. 
B)  are a type of normal distribution. 
C)  have scores that stack up at either the high or low end of the distribution. 
D)  both b and c are true.

Question 4

In a frequency distribution, N will equal

Accepted Answer

A)  the sum of the X-scores. 
B)  the number of times a particular score occurs. 
C)  the sum of the f column. 
D)  the number of times a tally mark is placed next to a score. 
A)  the sum of the X-scores. 
B)  the number of times a particular score occurs. 
C)  the sum of the f column. 
D)  the number of times a tally mark is placed next to a score.

Question 5

For the scores: 5, 5, 7, 7, 7, 7, 10, 10, 10, 10, 12, 12, 12, 20, 20, 35, 40, what is the shape of the distribution?

Accepted Answer

A)  symmetrical 
B)  positively skewed 
C)  negatively skewed 
D)  bimodal 
A)  symmetrical 
B)  positively skewed 
C)  negatively skewed 
D)  bimodal

Question 6

Suppose you are constructing a grouped frequency distribution for a data set that has a high score of 59 and a low score of 35.
a. What is the range?
b. What should the size of the class interval be?
c. What should the first entry be at the bottom of the distribution?

Accepted Answer

a. Range: 59.5 - 34.5 = 25
b.

Question 7

What is the main advantage of using frequency polygons over histograms?

Accepted Answer

Frequency polygons are preferable to his

Question 8

Construct a grouped frequency distribution for the following set of scores?
 $\begin{array}{llll}
73 & 52 & 96 & 82 \
61 & 98 & 68 & 53 \
89 & 41 & 43 & 86 \
72 & 34 & 72 & 55
\end{array}$

Accepted Answer

None

Question 9

When the data from a frequency distribution are graphed, the frequencies are shown

Accepted Answer

A)  along the y-axis. 
B)  along the x-axis. 
C)  along the abscissa. 
D)  across the top of the graph. 
A)  along the y-axis. 
B)  along the x-axis. 
C)  along the abscissa. 
D)  across the top of the graph.

Question 10

The highest score in a distribution is 74 and the lowest score is 51. What is the range?

Accepted Answer

A)  24.5 
B)  23.5 
C)  23 
D)  24 
A)  24.5 
B)  23.5 
C)  23 
D)  24

Question 11

In the graph of a frequency distribution, the ordinate represents

Accepted Answer

A)  the frequencies of scores. 
B)  the values of the variable being measured. 
C)  the scores on the vertical axis. 
D)  the width of the class intervals. 
A)  the frequencies of scores. 
B)  the values of the variable being measured. 
C)  the scores on the vertical axis. 
D)  the width of the class intervals.

Question 12

In a grouped frequency distribution i refers to

Accepted Answer

A)  the range of the class interval. 
B)  the number of class intervals. 
C)  the number of scores in the class interval. 
D)  the first entry in the class interval. 
A)  the range of the class interval. 
B)  the number of class intervals. 
C)  the number of scores in the class interval. 
D)  the first entry in the class interval.

Question 13

For which type of distribution table do we need to calculate the range for the scores?

Accepted Answer

A)  a relative frequency distribution 
B)  a simple frequency distribution 
C)  a cumulative frequency distribution 
D)  a grouped frequency distribution 
A)  a relative frequency distribution 
B)  a simple frequency distribution 
C)  a cumulative frequency distribution 
D)  a grouped frequency distribution

Question 14

One of the class intervals in a grouped frequency distribution is 60 - 64. What is the size of the interval?

Accepted Answer

A)  5 
B)  4 
C)  63 
D)  64 
A)  5 
B)  4 
C)  63 
D)  64

Question 15

In a negatively skewed distribution

Accepted Answer

A)  there are fewer high scores than low scores. 
B)  there are fewer low scores than high scores. 
C)  all of the scores are positive. 
D)  all of the scores are negative. 
A)  there are fewer high scores than low scores. 
B)  there are fewer low scores than high scores. 
C)  all of the scores are positive. 
D)  all of the scores are negative.

Question 16

In a distribution of scores where N = 12, a score of 4 occurred three times. What is the relative frequency of that score?

Accepted Answer

A)  .75 
B)  .25 
C)  .33 
D)  Not enough information is provided. 
A)  .75 
B)  .25 
C)  .33 
D)  Not enough information is provided.

Question 17

Identify whether scores on the following variables would result in graphs that are positively skewed (PS) or negatively skewed (NS).
a. Age at retirement __________
b. Weights of marathon runners __________
c. Income of professional athletes __________
d. Self-esteem of celebrities __________
e. Scores of 5th graders on a college entrance exam __________
f. Racing speed of tortoises __________

Accepted Answer

a. NS
b. P

Question 18

A cumulative frequency distribution begins with

Accepted Answer

A)  a simple frequency distribution table. 
B)  a relative frequency distribution table. 
C)  percentile ranks. 
D)  a grouped frequency distribution table. 
A)  a simple frequency distribution table. 
B)  a relative frequency distribution table. 
C)  percentile ranks. 
D)  a grouped frequency distribution table.

Question 19

A set of scores has the following distribution:
 $\begin{array}{rr}
\underline{\boldsymbol{X}} & \underline{f}\
{12}&{1} \
11 & 3 \
10 & 2 \
9 & 2 \
8 & 1
\end{array}$ a. What is N?
b. What is the cumulative frequency of a score of 10?
c. What is the percentile rank of a score of 11?
d. What is the relative frequency of a score of 9?

Accepted Answer

a. N = 9
b. cf of sc

What is the benefit of creating a grouped frequency distribution table rather than an ungrouped simple frequency distribution table?

Compare and contrast positively skewed distributions and negatively skewed distributions and give an example of each.

Skewed distributions

In a frequency distribution, N will equal

For the scores: 5, 5, 7, 7, 7, 7, 10, 10, 10, 10, 12, 12, 12, 20, 20, 35, 40, what is the shape of the distribution?

Suppose you are constructing a grouped frequency distribution for a data set that has a high score of 59 and a low score of 35. a. What is the range? b. What should the size of the class interval be? c. What should the first entry be at the bottom of the distribution?

What is the main advantage of using frequency polygons over histograms?

Construct a grouped frequency distribution for the following set of scores? 73 52 96 82 61 98 68 53 89 41 43 86 72 34 72 55

When the data from a frequency distribution are graphed, the frequencies are shown

The highest score in a distribution is 74 and the lowest score is 51. What is the range?

In the graph of a frequency distribution, the ordinate represents

In a grouped frequency distribution i refers to

For which type of distribution table do we need to calculate the range for the scores?

One of the class intervals in a grouped frequency distribution is 60 - 64. What is the size of the interval?

In a negatively skewed distribution

In a distribution of scores where N = 12, a score of 4 occurred three times. What is the relative frequency of that score?

A cumulative frequency distribution begins with

A set of scores has the following distribution: 12 1 11 3 10 2 9 2 8 1 a. What is N? b. What is the cumulative frequency of a score of 10? c. What is the percentile rank of a score of 11? d. What is the relative frequency of a score of 9?

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Exam 2: Organizing Data Using Tables and Graphs

What is the benefit of creating a grouped frequency distribution table rather than an ungrouped simple frequency distribution table?

Compare and contrast positively skewed distributions and negatively skewed distributions and give an example of each.

Skewed distributions

In a frequency distribution, N will equal

For the scores: 5, 5, 7, 7, 7, 7, 10, 10, 10, 10, 12, 12, 12, 20, 20, 35, 40, what is the shape of the distribution?

Suppose you are constructing a grouped frequency distribution for a data set that has a high score of 59 and a low score of 35. a. What is the range? b. What should the size of the class interval be? c. What should the first entry be at the bottom of the distribution?

What is the main advantage of using frequency polygons over histograms?

Construct a grouped frequency distribution for the following set of scores? 73 52 96 82 61 98 68 53 89 41 43 86 72 34 72 55

When the data from a frequency distribution are graphed, the frequencies are shown

The highest score in a distribution is 74 and the lowest score is 51. What is the range?

In the graph of a frequency distribution, the ordinate represents

In a grouped frequency distribution i refers to

For which type of distribution table do we need to calculate the range for the scores?

One of the class intervals in a grouped frequency distribution is 60 - 64. What is the size of the interval?

In a negatively skewed distribution

In a distribution of scores where N = 12, a score of 4 occurred three times. What is the relative frequency of that score?

A cumulative frequency distribution begins with

A set of scores has the following distribution: 12 1 11 3 10 2 9 2 8 1 a. What is N? b. What is the cumulative frequency of a score of 10? c. What is the percentile rank of a score of 11? d. What is the relative frequency of a score of 9?

Measures of Central Tendency

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters