Question 1

The ________ is the percentage of scores with values that fall below a specified score in a distribution,is called the:

Accepted Answer

A) percentile rank 
B) interval 
C) relative frequency 
D) percentile point 
A) percentile rank 
B) interval 
C) relative frequency 
D) percentile point

Question 2

Frequency distributions summarize the average scores in a set of data.

Accepted Answer

A) True 
 B)False

Question 3

Relative frequencies sum to the total frequency count.

Accepted Answer

A) True 
 B)False

Question 4

The data should be ungrouped for the following data set: 6,7,7,7,7,7,7,8,8,8,9,9,9,6,6,6,8,and 7. ,

Accepted Answer

A) True 
 B)False

Question 5

When cumulating frequencies from the bottom up,the data are discussed in terms of

Accepted Answer

A) at most 
B) less than 
C) at or below 
D) all of the above 
A) at most 
B) less than 
C) at or below 
D) all of the above

Question 6

A researcher wants to determine how many participants will take less than 24 seconds to complete a cognitive performance task.If he constructs a frequency distribution for these data,what type of distribution would be most appropriate to answer his question?

Accepted Answer

A) a simple frequency distribution 
B) a relative frequency distribution 
C) a cumulative frequency distribution from the bottom up 
D) a cumulative frequency distribution from the top down 
A) a simple frequency distribution 
B) a relative frequency distribution 
C) a cumulative frequency distribution from the bottom up 
D) a cumulative frequency distribution from the top down

Question 7

Grouped data can be distributed

Accepted Answer

A) as a range of values 
B) with upper and lower boundaries 
C) into intervals 
D) all of the above 
A) as a range of values 
B) with upper and lower boundaries 
C) into intervals 
D) all of the above

Question 8

Ungrouped data can be distributed as

Accepted Answer

A) intervals 
B) categories 
C) upper and lower boundaries 
D) all of the above 
A) intervals 
B) categories 
C) upper and lower boundaries 
D) all of the above

Question 9

A relative frequency is typically used with smaller,but not larger,data sets.

Accepted Answer

A) True 
 B)False

Question 10

Grouped data are used to summarize quantitative data that are continuous or discrete.

Accepted Answer

A) True 
 B)False

Question 11

What is the percentile point at the 50th percentile for the following distribution?

Accepted Answer

A) 21 
B) 23.5 
C) 25 
D) 25.5 
A) 21 
B) 23.5 
C) 25 
D) 25.5

Question 12

A histogram is basically a bar chart where the bars do not touch.

Accepted Answer

A) True 
 B)False

Question 13

A circular graph that displays the relative percentage of a frequency distribution into sectors is called a scatter gram.

Accepted Answer

A) True 
 B)False

Question 14

Which of the following is NOT a rule for constructing a simple frequency distribution?

Accepted Answer

A) The number of intervals should equal the number of values measured. 
B) Each interval is equidistant. 
C) No class interval overlaps. 
D) Values are rounded to the same degree of accuracy measured in the original data. 
A) The number of intervals should equal the number of values measured. 
B) Each interval is equidistant. 
C) No class interval overlaps. 
D) Values are rounded to the same degree of accuracy measured in the original data.

Question 15

A student scores in the 80th percentile on an exam.What does this mean in comparison to all other students?

Accepted Answer

A) the student scored higher than 80% of all others who took the exam 
B) the student scored worse than 80% of all others who took the exam 
C) Of all those who took the exam,only 80% of them completed it 
D) the student would score the same grade on the exam 80% of the time 
A) the student scored higher than 80% of all others who took the exam 
B) the student scored worse than 80% of all others who took the exam 
C) Of all those who took the exam,only 80% of them completed it 
D) the student would score the same grade on the exam 80% of the time

Question 16

A researcher finds that 12% of participants make between 3-5 visits to a physician each year.What are the real limits for this interval?

Accepted Answer

A) 3-5 
B) 2.5-5.5 
C) 2.5-3.5 
D) equal to the sum of the products for the previous interval 
A) 3-5 
B) 2.5-5.5 
C) 2.5-3.5 
D) equal to the sum of the products for the previous interval

Question 17

A researcher measures the weight (in ounces)of newborn infants in the month of March.What type of graphical display would be most appropriate for summarizing the frequency of infants falling into different intervals of weight?

Accepted Answer

A) histogram 
B) bar chart 
C) scatter gram 
D) all of the above 
A) histogram 
B) bar chart 
C) scatter gram 
D) all of the above

Question 18

A researcher summarizes a set of frequency data into five intervals.This is an example of a frequency distribution for

Accepted Answer

A) ungrouped data 
B) grouped data 
C) inferential statistics 
D) population parameters 
A) ungrouped data 
B) grouped data 
C) inferential statistics 
D) population parameters

Question 19

A stem-and-leaf display retains the value of each data point.

Accepted Answer

A) True 
 B)False

Question 20

The sum of the frequencies for a distribution is 100.This means that fewer than 100 persons were counted.

Accepted Answer

A) True 
 B)False

The ________ is the percentage of scores with values that fall below a specified score in a distribution,is called the:

Frequency distributions summarize the average scores in a set of data.

Relative frequencies sum to the total frequency count.

The data should be ungrouped for the following data set: 6,7,7,7,7,7,7,8,8,8,9,9,9,6,6,6,8,and 7. ,

When cumulating frequencies from the bottom up,the data are discussed in terms of

A researcher wants to determine how many participants will take less than 24 seconds to complete a cognitive performance task.If he constructs a frequency distribution for these data,what type of distribution would be most appropriate to answer his question?

Grouped data can be distributed

Ungrouped data can be distributed as

A relative frequency is typically used with smaller,but not larger,data sets.

Grouped data are used to summarize quantitative data that are continuous or discrete.

What is the percentile point at the 50th percentile for the following distribution?

A histogram is basically a bar chart where the bars do not touch.

A circular graph that displays the relative percentage of a frequency distribution into sectors is called a scatter gram.

Which of the following is NOT a rule for constructing a simple frequency distribution?

A student scores in the 80th percentile on an exam.What does this mean in comparison to all other students?

A researcher finds that 12% of participants make between 3-5 visits to a physician each year.What are the real limits for this interval?

A researcher measures the weight (in ounces)of newborn infants in the month of March.What type of graphical display would be most appropriate for summarizing the frequency of infants falling into different intervals of weight?

A researcher summarizes a set of frequency data into five intervals.This is an example of a frequency distribution for

A stem-and-leaf display retains the value of each data point.

The sum of the frequencies for a distribution is 100.This means that fewer than 100 persons were counted.

Introduction to Statistics

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

Testing Means: Related-Samples T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

Two-Way Analysis of Variance: Between-Subjects Factorial Design

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Nonparametric Tests for Ordinal Data: Understanding and Interpretation

Chi-Square Tests: Goodness-of-Fit and Independence

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters

Exam 2: Summarizing Data: Frequency Distributions in

The ________ is the percentage of scores with values that fall below a specified score in a distribution,is called the:

Frequency distributions summarize the average scores in a set of data.

Relative frequencies sum to the total frequency count.

The data should be ungrouped for the following data set: 6,7,7,7,7,7,7,8,8,8,9,9,9,6,6,6,8,and 7. ,

When cumulating frequencies from the bottom up,the data are discussed in terms of

A researcher wants to determine how many participants will take less than 24 seconds to complete a cognitive performance task.If he constructs a frequency distribution for these data,what type of distribution would be most appropriate to answer his question?

Grouped data can be distributed

Ungrouped data can be distributed as

A relative frequency is typically used with smaller,but not larger,data sets.

Grouped data are used to summarize quantitative data that are continuous or discrete.

What is the percentile point at the 50th percentile for the following distribution?

A histogram is basically a bar chart where the bars do not touch.

A circular graph that displays the relative percentage of a frequency distribution into sectors is called a scatter gram.

Which of the following is NOT a rule for constructing a simple frequency distribution?

A student scores in the 80th percentile on an exam.What does this mean in comparison to all other students?

A researcher finds that 12% of participants make between 3-5 visits to a physician each year.What are the real limits for this interval?

A researcher measures the weight (in ounces)of newborn infants in the month of March.What type of graphical display would be most appropriate for summarizing the frequency of infants falling into different intervals of weight?

A researcher summarizes a set of frequency data into five intervals.This is an example of a frequency distribution for

A stem-and-leaf display retains the value of each data point.

The sum of the frequencies for a distribution is 100.This means that fewer than 100 persons were counted.

Introduction to Statistics

Summarizing Data: Central Tendency

Summarizing Data: Variability

Probability, Normal Distributions, and Z Scores

Characteristics of the Sample Mean

Hypothesis Testing: Significance, Effect Size, and Power

Testing Means: One-Sample T Test With Confidence Intervals

Testing Means: Two- Independent-Sample T Test With Confidence Intervals

Testing Means: Related-Samples T Test With Confidence Intervals

One-Way Analysis of Variance: Between- Subjects and Within- Subjects Repeated- Measures Designs

Two-Way Analysis of Variance: Between-Subjects Factorial Design

Correlation and Linear Regression

Chi-Square Tests: Goodness of Fit and the Test for Independence

Nonparametric Tests for Ordinal Data: Understanding and Interpretation

Chi-Square Tests: Goodness-of-Fit and Independence

Understanding Regression Analysis

Understanding Correlation Coefficients in Statistical Analysis

Filters