Question 1

When you begin working with a new data set,you should

Accepted Answer

A) know exactly which procedures you intend to use. 
B) expect that each of the procedures discussed will give you exactly the same information. 
C) be willing to explore your data using different procedures. 
D) conduct every procedure every time. 
A) know exactly which procedures you intend to use. 
B) expect that each of the procedures discussed will give you exactly the same information. 
C) be willing to explore your data using different procedures. 
D) conduct every procedure every time.

Question 2

The percentile is defined as the _____ of all scores in the data that are at or _____ a certain score.

Accepted Answer

A) number;below 
B) number;above 
C) percent;above 
D) percent;below 
A) number;below 
B) number;above 
C) percent;above 
D) percent;below

Question 3

In a normal distribution,if 5% of the scores are greater than 80,what percentage of the scores are between the mean and 80?

Accepted Answer

A) 15% 
B) 25% 
C) 35% 
D) 45% 
A) 15% 
B) 25% 
C) 35% 
D) 45%

Question 4

On a national qualifying exam,one student had a raw score of 85,and another student had percentile of 85.Which is better,a raw score of 85 or a percentile of 85?

Accepted Answer

A) the raw score of 85 
B) the percentile of 85 
C) they are equally good 
D) you can not tell 
A) the raw score of 85 
B) the percentile of 85 
C) they are equally good 
D) you can not tell

Question 5

The sum of all the individual frequencies always equals

Accepted Answer

A) N. 
B) ƒ. 
C) the total number of all the Ns. 
D) the sum of all the scores. 
A) N. 
B) ƒ. 
C) the total number of all the Ns. 
D) the sum of all the scores.

Question 6

In a simple frequency distribution constructed from the data 9,8,8,7,7,7,5,5,4,4,4,4,3,2,2,1,0,0,the score "7" would have an f of

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 7

An advantage of percentiles over cumulative frequencies is that

Accepted Answer

A) percentiles are often easier to interpret than cumulative frequencies. 
B) cumulative frequencies are often easier to interpret than percentiles. 
C) percentiles provide the proportion of scores at or below a score,whereas cumulative frequencies provide N. 
D) cumulative frequencies are more complicated than relative frequencies. 
A) percentiles are often easier to interpret than cumulative frequencies. 
B) cumulative frequencies are often easier to interpret than percentiles. 
C) percentiles provide the proportion of scores at or below a score,whereas cumulative frequencies provide N. 
D) cumulative frequencies are more complicated than relative frequencies.

Question 8

When graphing the frequencies of males and females in the class,a _____ graph should be used.

Accepted Answer

A) bar 
B) histogram 
C) polygon 
D) simple 
A) bar 
B) histogram 
C) polygon 
D) simple

Question 9

If the number of hot lunches sold at school this week was 1,350 and the relative frequency on Friday was 0.22,how many lunches were sold on Friday?

Accepted Answer

A) 297 
B) 342 
C) 345 
D) 388 
A) 297 
B) 342 
C) 345 
D) 388

Question 10

In the following frequency distribution table,what is the error?

Accepted Answer

A) The frequency of the score of 8 is incorrect. 
B) The rel f for the score of 6 is incorrect. 
C) The cf for the score of 6 is incorrect. 
D) There are no errors. 
A) The frequency of the score of 8 is incorrect. 
B) The rel f for the score of 6 is incorrect. 
C) The cf for the score of 6 is incorrect. 
D) There are no errors.

Question 11

To obtain the relative frequency,we would

Accepted Answer

A) count the total number of scores. 
B) divide the frequency for a score by the total number of scores. 
C) divide the total number of scores by the frequency for a score. 
D) add the simple frequencies below a score to the score's simple frequency. 
A) count the total number of scores. 
B) divide the frequency for a score by the total number of scores. 
C) divide the total number of scores by the frequency for a score. 
D) add the simple frequencies below a score to the score's simple frequency.

Question 12

In a normal distribution,the low-frequency,extreme scores located on the far left and far right of the distribution are called the

Accepted Answer

A) scores. 
B) peak. 
C) tails. 
D) curls. 
A) scores. 
B) peak. 
C) tails. 
D) curls.

Question 13

In a normal distribution with a mean of 30 what percentage of the scores would be above the mean?

Accepted Answer

A) 0% 
B) 25% 
C) 50% 
D) 75% 
A) 0% 
B) 25% 
C) 50% 
D) 75%

Question 14

When graphing the frequencies of response times from an experiment,a _____ graph should be used.

Accepted Answer

A) bar 
B) histogram 
C) polygon 
D) simple 
A) bar 
B) histogram 
C) polygon 
D) simple

Question 15

In a normal distribution,if 35% of the scores are between the score of 40 and the mean,what percentage of the scores are below 40?

Accepted Answer

A) 15% 
B) 25% 
C) 35% 
D) 45% 
A) 15% 
B) 25% 
C) 35% 
D) 45%

Question 16

For the following data what values should be in the Score column of the frequency distribution table? 8,8 8,7,5,5,5,5,4,4,3,3,3,2,1,1,1,1,1

Accepted Answer

A) 9,8,7,6,5,4,3,2,1,0 
B) 8,7,5,4,3,2,1 
C) 8,7,6,5,4,3,2,1 
D) 3,1,0,4,2,3,1,5 
A) 9,8,7,6,5,4,3,2,1,0 
B) 8,7,5,4,3,2,1 
C) 8,7,6,5,4,3,2,1 
D) 3,1,0,4,2,3,1,5

Question 17

What is the N for the following frequency distribution?

Accepted Answer

A) 5 
B) 10 
C) 15 
D) 65 
A) 5 
B) 10 
C) 15 
D) 65

Question 18

The distinguishing characteristic of the frequency polygon is that

Accepted Answer

A) the bars are shaded in. 
B) the graph is created by connecting the dots with straight lines. 
C) the graph does not center the bars over the scores on the X axis. 
D) the graph centers the bars over the scores on the X axis. 
A) the bars are shaded in. 
B) the graph is created by connecting the dots with straight lines. 
C) the graph does not center the bars over the scores on the X axis. 
D) the graph centers the bars over the scores on the X axis.

Question 19

What is the relative frequency for the score of 12 in the following simple frequency distribution?

Accepted Answer

A) 0.15 
B) 0.50 
C) 0.60 
D) 0.40 
A) 0.15 
B) 0.50 
C) 0.60 
D) 0.40

Question 20

In a normal curve,the proportion of the area under the curve between two scores represents

Accepted Answer

A) the cumulative frequency of the lower score. 
B) the cumulative relative frequency of the lower score. 
C) the relative frequency of all scores between the two scores. 
D) the relative frequency of all scores below the upper score. 
A) the cumulative frequency of the lower score. 
B) the cumulative relative frequency of the lower score. 
C) the relative frequency of all scores between the two scores. 
D) the relative frequency of all scores below the upper score.

When you begin working with a new data set,you should

The percentile is defined as the _ of all scores in the data that are at or _ a certain score.

In a normal distribution,if 5% of the scores are greater than 80,what percentage of the scores are between the mean and 80?

On a national qualifying exam,one student had a raw score of 85,and another student had percentile of 85.Which is better,a raw score of 85 or a percentile of 85?

The sum of all the individual frequencies always equals

In a simple frequency distribution constructed from the data 9,8,8,7,7,7,5,5,4,4,4,4,3,2,2,1,0,0,the score "7" would have an f of

An advantage of percentiles over cumulative frequencies is that

When graphing the frequencies of males and females in the class,a _____ graph should be used.

If the number of hot lunches sold at school this week was 1,350 and the relative frequency on Friday was 0.22,how many lunches were sold on Friday?

In the following frequency distribution table,what is the error?

To obtain the relative frequency,we would

In a normal distribution,the low-frequency,extreme scores located on the far left and far right of the distribution are called the

In a normal distribution with a mean of 30 what percentage of the scores would be above the mean?

When graphing the frequencies of response times from an experiment,a _____ graph should be used.

In a normal distribution,if 35% of the scores are between the score of 40 and the mean,what percentage of the scores are below 40?

For the following data what values should be in the Score column of the frequency distribution table? 8,8 8,7,5,5,5,5,4,4,3,3,3,2,1,1,1,1,1

What is the N for the following frequency distribution?

The distinguishing characteristic of the frequency polygon is that

What is the relative frequency for the score of 12 in the following simple frequency distribution?

In a normal curve,the proportion of the area under the curve between two scores represents

Introduction to Statistics

Statistics and the Research Process

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

Exam 3: Frequency Distributions and Percentiles

When you begin working with a new data set,you should

The percentile is defined as the _____ of all scores in the data that are at or _____ a certain score.

In a normal distribution,if 5% of the scores are greater than 80,what percentage of the scores are between the mean and 80?

On a national qualifying exam,one student had a raw score of 85,and another student had percentile of 85.Which is better,a raw score of 85 or a percentile of 85?

The sum of all the individual frequencies always equals

In a simple frequency distribution constructed from the data 9,8,8,7,7,7,5,5,4,4,4,4,3,2,2,1,0,0,the score "7" would have an f of

An advantage of percentiles over cumulative frequencies is that

When graphing the frequencies of males and females in the class,a _____ graph should be used.

If the number of hot lunches sold at school this week was 1,350 and the relative frequency on Friday was 0.22,how many lunches were sold on Friday?

In the following frequency distribution table,what is the error?

To obtain the relative frequency,we would

In a normal distribution,the low-frequency,extreme scores located on the far left and far right of the distribution are called the

In a normal distribution with a mean of 30 what percentage of the scores would be above the mean?

When graphing the frequencies of response times from an experiment,a _____ graph should be used.

In a normal distribution,if 35% of the scores are between the score of 40 and the mean,what percentage of the scores are below 40?

For the following data what values should be in the Score column of the frequency distribution table? 8,8 8,7,5,5,5,5,4,4,3,3,3,2,1,1,1,1,1

What is the N for the following frequency distribution?

The distinguishing characteristic of the frequency polygon is that

What is the relative frequency for the score of 12 in the following simple frequency distribution?

In a normal curve,the proportion of the area under the curve between two scores represents

Introduction to Statistics

Statistics and the Research Process

Measures of Central Tendency;the Mean, median, and Mode

Measures of Variability: Range, variance, and Standard Deviation

Z-Scores and the Normal Curve

The Correlation Coefficient

Linear Regression

Using Probability to Make Decisions About Data

Introduction to Hypothesis Testing

Performing the One-Sample T-Test and Testing Correlation Coefficients

The Two-Sample T-Test

The One-Way Analysis of Variance

The Two-Way Analysis of Variance

Chi Square and Other Nonparametric Procedures

Filters

The percentile is defined as the _ of all scores in the data that are at or _ a certain score.