Question 1

What indicates the number of scores that fell below the upper real limit of each interval?

Accepted Answer

A)  relative frequency distribution 
B)  cumulative frequency distribution 
C)  cumulative percentage distribution 
D)  none of these 
A)  relative frequency distribution 
B)  cumulative frequency distribution 
C)  cumulative percentage distribution 
D)  none of these

Question 2

Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width.   The lowest class interval is _________.

Accepted Answer

A)  30-35 
B)  32-36 
C)  32-37 
D)  30-34 
A)  30-35 
B)  32-36 
C)  32-37 
D)  30-34

Question 3

Define skewed curve.

Accepted Answer

A skewed curve, in statistical terms, re

Question 4

Compare and contrast a bar graph and a histogram.

Accepted Answer

Bar graphs and histograms are both used

Question 5

A researcher has collected some data on the amount of time in seconds (to the nearest 0.1 second) that it took trained rats to run through a maze. The data is shown below arranged in a frequency distribution of grouped scores.   The 75th percentile point is _________.

Accepted Answer

A)  6.42 
B)  6.87 
C)  6.82 
D)  6.47 
A)  6.42 
B)  6.87 
C)  6.82 
D)  6.47

Question 6

Given the distribution of grouped scores shown in the following table.   What is the cumulative percentage below the lower real limit of the interval 90-99?

Accepted Answer

A)  137 
B)  5.04 
C)  100.00 
D)  98.56 
A)  137 
B)  5.04 
C)  100.00 
D)  98.56

Question 7

A know-it-all claims that she has come up with a set of scores that is both symmetrical and positively skewed. Is this possible? Explain.

Accepted Answer

No, it is not possible for a set of scor

Question 8

Given a distribution of grouped scores, if an interval is shown as 2-8, the interval is 6 units wide

Accepted Answer

A) True 
 B)False

Question 9

When constructing bar graphs, the bars do not touch each other because _______.

Accepted Answer

A)  it looks nicer 
B)  it emphasizes the lack of quantitative relationship between the categories 
C)  it is traditional 
D)  none of these 
A)  it looks nicer 
B)  it emphasizes the lack of quantitative relationship between the categories 
C)  it is traditional 
D)  none of these

Question 10

In constructing a frequency distribution of grouped scores, i should be rounded to one more decimal place than in the raw scores.

Accepted Answer

A) True 
 B)False

Question 11

Given the frequency distribution of grouped scores shown in the following table, determine P 50.

Accepted Answer

Question 12

The vertical axis, i.e., the Y axis of a graph, is called the abscissa.

Accepted Answer

A) True 
 B)False

Question 13

Define cumulative percentage distribution.

Accepted Answer

A cumulative percentage distribution is

Question 14

Which of the following is (are) not a symmetrical distribution?

Accepted Answer

A)  a bell-shaped curve 
B)  a J-shaped curve 
C)  a rectangular curve 
D)  an inverted U-shaped curve 
E)  a bell-shaped, J-shaped, and an inverted U-shaped curve 
A)  a bell-shaped curve 
B)  a J-shaped curve 
C)  a rectangular curve 
D)  an inverted U-shaped curve 
E)  a bell-shaped, J-shaped, and an inverted U-shaped curve

Question 15

Compare a histogram and a stem and leaf diagram. Which do you prefer? Why?

Accepted Answer

A histogram and a stem and leaf diagram

Question 16

Define bar graph.

Accepted Answer

A bar graph, also known as a bar chart,

Question 17

Given the distribution of grouped scores shown in the following table.   The percentile rank of a score of 41 equals _________.

Accepted Answer

A)  25.42% 
B)  25.11% 
C)  16.47% 
D)  29.42% 
A)  25.42% 
B)  25.11% 
C)  16.47% 
D)  29.42%

Question 18

A frequency polygon results in a curve that looks as though the scores were continuously distributed.

Accepted Answer

A) True 
 B)False

Question 19

In graphing frequency distributions, _________ is usually plotted on the abscissa.

Accepted Answer

A)  frequency 
B)  class width 
C)  the score value 
D)  interval width 
A)  frequency 
B)  class width 
C)  the score value 
D)  interval width

Question 20

A relative frequency distribution indicates the number of scores that fall below the upper real limit of each interval.

Accepted Answer

A) True 
 B)False

What indicates the number of scores that fell below the upper real limit of each interval?

Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width. The lowest class interval is _________.

Define skewed curve.

Compare and contrast a bar graph and a histogram.

A researcher has collected some data on the amount of time in seconds (to the nearest 0.1 second) that it took trained rats to run through a maze. The data is shown below arranged in a frequency distribution of grouped scores. The 75th percentile point is _________.

Given the distribution of grouped scores shown in the following table. What is the cumulative percentage below the lower real limit of the interval 90-99?

A know-it-all claims that she has come up with a set of scores that is both symmetrical and positively skewed. Is this possible? Explain.

Given a distribution of grouped scores, if an interval is shown as 2-8, the interval is 6 units wide

When constructing bar graphs, the bars do not touch each other because _______.

In constructing a frequency distribution of grouped scores, i should be rounded to one more decimal place than in the raw scores.

Given the frequency distribution of grouped scores shown in the following table, determine P ₅₀.

The vertical axis, i.e., the Y axis of a graph, is called the abscissa.

Define cumulative percentage distribution.

Which of the following is (are) not a symmetrical distribution?

Compare a histogram and a stem and leaf diagram. Which do you prefer? Why?

Define bar graph.

Given the distribution of grouped scores shown in the following table. The percentile rank of a score of 41 equals _________.

A frequency polygon results in a curve that looks as though the scores were continuously distributed.

In graphing frequency distributions, _________ is usually plotted on the abscissa.

A relative frequency distribution indicates the number of scores that fall below the upper real limit of each interval.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Random Sampling and Probability

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Analysis of Variance

Introduction to the Two-Way Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

Exam 3: Frequency Distributions

What indicates the number of scores that fell below the upper real limit of each interval?

Assume your task is to group the raw scores given below into a frequency distribution of approximately 12 intervals of equal width. The lowest class interval is _________.

Define skewed curve.

Compare and contrast a bar graph and a histogram.

A researcher has collected some data on the amount of time in seconds (to the nearest 0.1 second) that it took trained rats to run through a maze. The data is shown below arranged in a frequency distribution of grouped scores. The 75th percentile point is _________.

Given the distribution of grouped scores shown in the following table. What is the cumulative percentage below the lower real limit of the interval 90-99?

A know-it-all claims that she has come up with a set of scores that is both symmetrical and positively skewed. Is this possible? Explain.

Given a distribution of grouped scores, if an interval is shown as 2-8, the interval is 6 units wide

When constructing bar graphs, the bars do not touch each other because _______.

In constructing a frequency distribution of grouped scores, i should be rounded to one more decimal place than in the raw scores.

Given the frequency distribution of grouped scores shown in the following table, determine P 50.

The vertical axis, i.e., the Y axis of a graph, is called the abscissa.

Define cumulative percentage distribution.

Which of the following is (are) not a symmetrical distribution?

Compare a histogram and a stem and leaf diagram. Which do you prefer? Why?

Define bar graph.

Given the distribution of grouped scores shown in the following table. The percentile rank of a score of 41 equals _________.

A frequency polygon results in a curve that looks as though the scores were continuously distributed.

In graphing frequency distributions, _________ is usually plotted on the abscissa.

A relative frequency distribution indicates the number of scores that fall below the upper real limit of each interval.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Measures of Central Tendency and Variability

The Normal Curve and Standard Scores

Correlation

Linear Regression

Random Sampling and Probability

Binomial Distribution

Introduction to Hypothesis Testing: Using the Sign Test

Power

Sampling Distributions, Sampling Distribution of the Mean: the Normal Deviate Z Test

Students T Test for Single Samples

Students T Test for Correlated and Independent Groups

Introduction to the Analysis of Variance

Introduction to the Two-Way Analysis of Variance

Chi-Square and Other Nonparametric Tests

Filters

Given the frequency distribution of grouped scores shown in the following table, determine P ₅₀.