Question 1

The total area under a density curve represents 1.00.

Accepted Answer

A) True 
 B)False

Question 2

The relative frequencies in a distribution will always sum to:

Accepted Answer

A) 1.00 
B) 100.00 
C) relative frequencies can not be summed 
D) none of these 
A) 1.00 
B) 100.00 
C) relative frequencies can not be summed 
D) none of these

Question 3

In a grouped frequency distribution,the conventional starting point for the lowest interval is the closest number evenly divisible by the interval size that is equal to or less than the _____:

Accepted Answer

A) highest score 
B) lowest score 
C) interval size 
D) real limits of the score 
A) highest score 
B) lowest score 
C) interval size 
D) real limits of the score

Question 4

What is a relative frequency?

Accepted Answer

A relative frequency is the nu

Question 5

Cumulative percentages indicate the percentage of cases that have scores equal to or less than a given score value.

Accepted Answer

A) True 
 B)False

Question 6

A normal curve or distribution is ____________________nature.

Accepted Answer

The answer of A normal curve or distribution is ____________________nature....

Question 7

A frequency distribution is a table that lists scores on a variable and shows the number of individuals who obtained each score.

Accepted Answer

A) True 
 B)False

Question 8

A probability represents the proportion of times that some score was previously observed.

Accepted Answer

A) True 
 B)False

Question 9

_____ are derived by making assumptions and representing those assumptions mathematically.

Accepted Answer

A) Empirical distributions 
B) Theoretical distributions 
C) Assumptive distributions 
D) Realistic distributions 
A) Empirical distributions 
B) Theoretical distributions 
C) Assumptive distributions 
D) Realistic distributions

Question 10

Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students.  
What is the cumulative relative frequency for 7 days absent?

Accepted Answer

A) 0 
B) .87 
C) .96 
D) 24.0 
A) 0 
B) .87 
C) .96 
D) 24.0

Question 11

Cumulative frequency allows us to determine the number of scores ____________________a given score.

Accepted Answer

The answer of Cumulative frequency allows us to determine the...

Question 12

If you want to graph a variable that is qualitative in nature,then you should use ____.

Accepted Answer

A) a bar graph 
B) a histogram 
C) a frequency polygon 
D) It doesn't matter 
A) a bar graph 
B) a histogram 
C) a frequency polygon 
D) It doesn't matter

Question 13

Many frequency distributions use intervals to group data.For example,the in class exam scores ranged from 90-60 and the professor wants to have at least 6 groupings.What should be the interval?

Accepted Answer

A) 6 
B) 5 
C) 7 
D) None of these 
A) 6 
B) 5 
C) 7 
D) None of these

Question 14

When the potential values for a qualitative or discrete variable are such that a person can have one and only one score,the score values are said to be

Accepted Answer

A) mutually exclusive. 
B) exhaustive. 
C) infinite. 
D) exact. 
A) mutually exclusive. 
B) exhaustive. 
C) infinite. 
D) exact.

Question 15

Suppose you were given 102 scores which ranged from 0 to 45 and you were asked to create a grouped frequency distribution using 15 intervals.What would be the most appropriate starting value?

Accepted Answer

A) 0 
B) 15 
C) 3 
D) 7 
A) 0 
B) 15 
C) 3 
D) 7

Question 16

Frequency polygons differ from frequency histograms in that bars are not used,but rather,solid dots corresponding to the appropriate frequencies are placed directly above the score values.

Accepted Answer

A) True 
 B)False

Question 17

Relative frequency indicates the probability of observing scores in the future.

Accepted Answer

A) True 
 B)False

Question 18

Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students.  
What is the cumulative frequency for a score of 5?

Accepted Answer

A) 17 
B) 21 
C) 4 
D) 5 
A) 17 
B) 21 
C) 4 
D) 5

Question 19

Refer to the following distribution  
What is the cumulative frequency associated with a score of 6?

Accepted Answer

A) 2 
B) 5 
C) 7 
D) 13 
A) 2 
B) 5 
C) 7 
D) 13

Question 20

An outlier is

Accepted Answer

A) a case that shows a very extreme score relative to the majority of cases. 
B) a case that represents the score of the majority of cases. 
C) always caused by a clerical error in data collection. 
D) both a and c 
E) both b and c 
A) a case that shows a very extreme score relative to the majority of cases. 
B) a case that represents the score of the majority of cases. 
C) always caused by a clerical error in data collection. 
D) both a and c 
E) both b and c

The total area under a density curve represents 1.00.

The relative frequencies in a distribution will always sum to:

In a grouped frequency distribution,the conventional starting point for the lowest interval is the closest number evenly divisible by the interval size that is equal to or less than the _____:

What is a relative frequency?

Cumulative percentages indicate the percentage of cases that have scores equal to or less than a given score value.

A normal curve or distribution is ____________________nature.

A frequency distribution is a table that lists scores on a variable and shows the number of individuals who obtained each score.

A probability represents the proportion of times that some score was previously observed.

_____ are derived by making assumptions and representing those assumptions mathematically.

Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students. What is the cumulative relative frequency for 7 days absent?

Cumulative frequency allows us to determine the number of scores ____________________a given score.

If you want to graph a variable that is qualitative in nature,then you should use ____.

Many frequency distributions use intervals to group data.For example,the in class exam scores ranged from 90-60 and the professor wants to have at least 6 groupings.What should be the interval?

When the potential values for a qualitative or discrete variable are such that a person can have one and only one score,the score values are said to be

Suppose you were given 102 scores which ranged from 0 to 45 and you were asked to create a grouped frequency distribution using 15 intervals.What would be the most appropriate starting value?

Frequency polygons differ from frequency histograms in that bars are not used,but rather,solid dots corresponding to the appropriate frequencies are placed directly above the score values.

Relative frequency indicates the probability of observing scores in the future.

Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students. What is the cumulative frequency for a score of 5?

Refer to the following distribution What is the cumulative frequency associated with a score of 6?

An outlier is

Introduction and Mathematical Preliminaries

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters

Exam 2: Frequency and Probability Distributions

The total area under a density curve represents 1.00.

The relative frequencies in a distribution will always sum to:

In a grouped frequency distribution,the conventional starting point for the lowest interval is the closest number evenly divisible by the interval size that is equal to or less than the _____:

What is a relative frequency?

Cumulative percentages indicate the percentage of cases that have scores equal to or less than a given score value.

A normal curve or distribution is ____________________nature.

A frequency distribution is a table that lists scores on a variable and shows the number of individuals who obtained each score.

A probability represents the proportion of times that some score was previously observed.

_____ are derived by making assumptions and representing those assumptions mathematically.

Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students. What is the cumulative relative frequency for 7 days absent?

Cumulative frequency allows us to determine the number of scores ____________________a given score.

If you want to graph a variable that is qualitative in nature,then you should use ____.

Many frequency distributions use intervals to group data.For example,the in class exam scores ranged from 90-60 and the professor wants to have at least 6 groupings.What should be the interval?

When the potential values for a qualitative or discrete variable are such that a person can have one and only one score,the score values are said to be

Suppose you were given 102 scores which ranged from 0 to 45 and you were asked to create a grouped frequency distribution using 15 intervals.What would be the most appropriate starting value?

Frequency polygons differ from frequency histograms in that bars are not used,but rather,solid dots corresponding to the appropriate frequencies are placed directly above the score values.

Relative frequency indicates the probability of observing scores in the future.

Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students. What is the cumulative frequency for a score of 5?

Refer to the following distribution What is the cumulative frequency associated with a score of 6?

An outlier is

Introduction and Mathematical Preliminaries

Measures of Central Tendency and Variability

Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

Pearson Correlation and Regression: Descriptive Aspects

Probability

Estimation and Sampling Distributions

Hypothesis Testing: Inferences About a Single Mean

Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships

Independent Groups T-Test

Correlated Groups T-Test

One-Way Repeated Measures Analysis of Variance

Pearson Correlation and Regression: Inferential Aspects

Chi-Square Test

Nonparametric Statistics

Two-Way Between-Subjects Analysis of Variance

Overview and Extension: Statistical Tests for More Complex Designs

Filters