Question 1

A set of scores that is positively skewed will become normally distributed after they have been converted to standard scores.

Accepted Answer

A) True 
 B)False

Question 2

Knowing that a set of scores approximates a normal distribution allows us to make probability statements with respect to those scores,given that we know the mean and standard deviation.

Accepted Answer

A) True 
 B)False

Question 3

The proportion of scores occurring between standard scores of 0 and -1 is less than the proportion of scores occurring between standard scores of 0 and +1.

Accepted Answer

A) True 
 B)False

Question 4

What raw score in a normal distribution would correspond to a z score of 1.56 with a mean equal to 75 and standard deviation of 2?

Accepted Answer

A) 78.12 
B) 64.13 
C) 68.90 
D) 34.45

Question 5

Police officers must take an exam before they are hired in the department.Jack's has a T-score on the exam was 50 and John's T-score was 60.Who will most likely get hired?

Accepted Answer

A) Jack 
B) John 
C) Cannot be determined 
D) Both have an equal chance

Question 6

Given a normal distribution,what z score would correspond to the 95th percentile?

Accepted Answer

A) 1.96 
B) 1 
C) 2 
D) 1.645

Question 7

Which of the following is a true property of a set of standard scores?

Accepted Answer

A) the mean is always one 
B) the standard deviation is always one 
C) they can only be positive numbers 
D) they can only be negative numbers

Question 8

Another name for a standard score in a normal distribution is _____.

Accepted Answer

A) z score 
B) percentile rank 
C) z score in any distribution 
D) cumulative relative frequency

Question 9

In a normal distribution,approximately _____ of all scores fall between standard scores of -1 and +1.

Accepted Answer

A) 50% 
B) 68% 
C) 95% 
D) 99%

Question 10

A ____________________is based on a normal distribution.

Accepted Answer

The answer of A ____________________is based on a normal distribution....

Question 11

Given a normal distribution with a mean of 50 and a standard deviation of 2,what is the z score of a raw score of 46?

Accepted Answer

A) -2 
B) 2 
C) -4 
D) 4

Question 12

A standard score converts a score from its original,or raw,form to a form that takes into consideration its standing relative to the mean and standard deviation of the entire distribution of scores.

Accepted Answer

A) True 
 B)False

Question 13

All normal distributions are _____ in nature.

Accepted Answer

A) asymmetrical 
B) theoretical 
C) leptokurtic 
D) all of these

Question 14

Average family watches 40 hours of TV a week and the SD is 4.Jane says she watches about 28 hours of TV a week and her variance is 4.What is her Standard score?

Accepted Answer

A) -3 
B) -6 
C) -1 
D) 3

Question 15

A set of scores that is platykurtic will still be platykurtic after they have been converted to standard scores.

Accepted Answer

A) True 
 B)False

Question 16

What proportion of scores in a normal distribution lies between z scores of -1.55and +1.55?

Accepted Answer

A) .8788 
B) .9802 
C) .8779 
D) None of these

Question 17

The process of standardizing scores changes the basic shape of the distribution.

Accepted Answer

A) True 
 B)False

Question 18

Approximately what raw score in a normal distribution would correspond to a z score of 1.56 with
= 75 and s2 = 4?

Accepted Answer

A) 78 
B) 81 
C) 72 
D) 69

Question 19

A negative standard score indicates that the original score is less than the mean.

Accepted Answer

A) True 
 B)False

Question 20

The percentage of scores in the distribution that occur at or below a given value,X,is the percentile of that value.

Accepted Answer

A) True 
 B)False

Exam 4: Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

A set of scores that is positively skewed will become normally distributed after they have been converted to standard scores.

Knowing that a set of scores approximates a normal distribution allows us to make probability statements with respect to those scores,given that we know the mean and standard deviation.

The proportion of scores occurring between standard scores of 0 and -1 is less than the proportion of scores occurring between standard scores of 0 and +1.

What raw score in a normal distribution would correspond to a z score of 1.56 with a mean equal to 75 and standard deviation of 2?

Police officers must take an exam before they are hired in the department.Jack's has a T-score on the exam was 50 and John's T-score was 60.Who will most likely get hired?

Given a normal distribution,what z score would correspond to the 95th percentile?

Which of the following is a true property of a set of standard scores?

Another name for a standard score in a normal distribution is _____.

In a normal distribution,approximately _____ of all scores fall between standard scores of -1 and +1.

A ____________________is based on a normal distribution.

Given a normal distribution with a mean of 50 and a standard deviation of 2,what is the z score of a raw score of 46?

A standard score converts a score from its original,or raw,form to a form that takes into consideration its standing relative to the mean and standard deviation of the entire distribution of scores.

All normal distributions are _____ in nature.

Average family watches 40 hours of TV a week and the SD is 4.Jane says she watches about 28 hours of TV a week and her variance is 4.What is her Standard score?

A set of scores that is platykurtic will still be platykurtic after they have been converted to standard scores.

What proportion of scores in a normal distribution lies between z scores of -1.55and +1.55?

The process of standardizing scores changes the basic shape of the distribution.

Approximately what raw score in a normal distribution would correspond to a z score of 1.56 with = 75 and s² = 4?

A negative standard score indicates that the original score is less than the mean.

The percentage of scores in the distribution that occur at or below a given value,X,is the percentile of that value.

Exam 4: Percentiles,percentile Ranks,standard Scores,and the Normal Distribution

A set of scores that is positively skewed will become normally distributed after they have been converted to standard scores.

Knowing that a set of scores approximates a normal distribution allows us to make probability statements with respect to those scores,given that we know the mean and standard deviation.

The proportion of scores occurring between standard scores of 0 and -1 is less than the proportion of scores occurring between standard scores of 0 and +1.

What raw score in a normal distribution would correspond to a z score of 1.56 with a mean equal to 75 and standard deviation of 2?

Police officers must take an exam before they are hired in the department.Jack's has a T-score on the exam was 50 and John's T-score was 60.Who will most likely get hired?

Given a normal distribution,what z score would correspond to the 95th percentile?

Which of the following is a true property of a set of standard scores?

Another name for a standard score in a normal distribution is _____.

In a normal distribution,approximately _____ of all scores fall between standard scores of -1 and +1.

A ____________________is based on a normal distribution.

Given a normal distribution with a mean of 50 and a standard deviation of 2,what is the z score of a raw score of 46?

A standard score converts a score from its original,or raw,form to a form that takes into consideration its standing relative to the mean and standard deviation of the entire distribution of scores.

All normal distributions are _____ in nature.

Average family watches 40 hours of TV a week and the SD is 4.Jane says she watches about 28 hours of TV a week and her variance is 4.What is her Standard score?

A set of scores that is platykurtic will still be platykurtic after they have been converted to standard scores.

What proportion of scores in a normal distribution lies between z scores of -1.55and +1.55?

The process of standardizing scores changes the basic shape of the distribution.

Approximately what raw score in a normal distribution would correspond to a z score of 1.56 with = 75 and s2 = 4?

A negative standard score indicates that the original score is less than the mean.

The percentage of scores in the distribution that occur at or below a given value,X,is the percentile of that value.

Approximately what raw score in a normal distribution would correspond to a z score of 1.56 with = 75 and s² = 4?