Question 1

The normal curve is _________.

Accepted Answer

A)  linear 
B)  rectangular 
C)  bell-shaped 
D)  skewed 
A)  linear 
B)  rectangular 
C)  bell-shaped 
D)  skewed

Question 2

An economics test was given and the following sample scores were recorded:   The z score for individual G is _________.

Accepted Answer

A)  - 1.42 
B)  13.00 
C)  1.42 
D)  6.16 
A)  - 1.42 
B)  13.00 
C)  1.42 
D)  6.16

Question 3

Given the following z scores, find the area below z :

Accepted Answer

The answer of Given the following z scores, find the...

Question 4

How much would your income be if its z score value was 2.58?

Accepted Answer

A)  $10,000 
B)  $ 9,999 
C)  $ 5,000 
D)  cannot be determined from information given 
A)  $10,000 
B)  $ 9,999 
C)  $ 5,000 
D)  cannot be determined from information given

Question 5

The standard deviation of the z distribution equals _________.

Accepted Answer

A)  0 
B)  1 
C)  the variance of the z distribution 
D)  0 and the variance of the z distribution 
A)  0 
B)  1 
C)  the variance of the z distribution 
D)  0 and the variance of the z distribution

Question 6

In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The distribution was normally distributed. 
 What percentage of patients would you expect to be in longer than 12.0 weeks?

Accepted Answer

In a normally distributed dataset, the m

Question 7

A standardized test has a mean of 88 and a standard deviation of 12. What is the score at the 90th percentile? Assume a normal distribution.

Accepted Answer

A)  90.00 
B)  112.00 
C)  103.36 
D)  91.00 
A)  90.00 
B)  112.00 
C)  103.36 
D)  91.00

Question 8

A z score is a transformed score.

Accepted Answer

A) True 
 B)False

Question 9

z scores allow comparison of variables that are measured on different scales.

Accepted Answer

A) True 
 B)False

Question 10

An economics test was given and the following sample scores were recorded:   The standard deviation of the distribution is _________.

Accepted Answer

A)  10.20 
B)  2.10 
C)  2.11 
D)  10.74 
A)  10.20 
B)  2.10 
C)  2.11 
D)  10.74

Question 11

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The percentile rank of a price of $13.87 is _________.

Accepted Answer

A)  48.78% 
B)  1.22% 
C)  98.78% 
D)  51.22% 
A)  48.78% 
B)  1.22% 
C)  98.78% 
D)  51.22%

Question 12

You have just received your psychology exam grade and you did better than the mean of the exam scores. If so, the z transformed value of your grade must

Accepted Answer

A)  be greater than 1.00 
B)  must be greater than 0.00 
C)  have a percentile rank greater than 50% 
D)  can't determine with information given 
E)  must be greater than 0.00 and have a percentile rank greater than 50%. 
A)  be greater than 1.00 
B)  must be greater than 0.00 
C)  have a percentile rank greater than 50% 
D)  can't determine with information given 
E)  must be greater than 0.00 and have a percentile rank greater than 50%.

Question 13

You have just taken a standardized skills test designed to help you make a career choice. Your math skills score was 63 and your writing skills score was 45. The standardized math distribution is normally distributed, with m = 50, and s = 8. The writing skills score distribution is also normally distributed, with m = 30, and s = 10. Based on this information, as between pursuing a career that requires good math skills or one requiring good writing skills, you should chose _________.

Accepted Answer

A)  neither, your skills are below average in both 
B)  the career requiring good math skills. 
C)  neither, this approach is bogus; dream interpretation should be used instead. 
D)  the career requiring good writing skills. 
A)  neither, your skills are below average in both 
B)  the career requiring good math skills. 
C)  neither, this approach is bogus; dream interpretation should be used instead. 
D)  the career requiring good writing skills.

Question 14

The area beyond a z score of +2.58 is 0.005.

Accepted Answer

A) True 
 B)False

Question 15

What is meant by a transformed score? Give an example.

Accepted Answer

A transformed score is a score that has

Question 16

The proportion of scores less than z = 0.00 is _________.

Accepted Answer

A)  0.00 
B)  0.50 
C)  1.00 
D)  - 0.50 
A)  0.00 
B)  0.50 
C)  1.00 
D)  - 0.50

Question 17

A z score designates how many standard deviations the raw score is above or below the mean.

Accepted Answer

A) True 
 B)False

Question 18

Assuming the z scores are normally distributed, what is the percentile rank of a z score of - 0.47?

Accepted Answer

A)  31.92 
B)  18.08 
C)  50.00 
D)  47.00 
E)  0.06 
A)  31.92 
B)  18.08 
C)  50.00 
D)  47.00 
E)  0.06

Question 19

Table A in your textbook has no negative z values, this means _________.

Accepted Answer

A)  the table can only be used with positive z values 
B)  the table can be used with both positive and negative z values because it is symmetrical 
C)  the table can be used with both positive and negative z values because it is skewed 
D)  none of these 
A)  the table can only be used with positive z values 
B)  the table can be used with both positive and negative z values because it is symmetrical 
C)  the table can be used with both positive and negative z values because it is skewed 
D)  none of these

Question 20

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The percentage of scores that lie between $9.00 and $10.00 is _________.

Accepted Answer

A)  15.31% 
B)  31.17% 
C)  23.24% 
D)  7.93% 
A)  15.31% 
B)  31.17% 
C)  23.24% 
D)  7.93%

The normal curve is _________.

An economics test was given and the following sample scores were recorded: The z score for individual G is _________.

Given the following z scores, find the area below z :

How much would your income be if its z score value was 2.58?

The standard deviation of the z distribution equals _________.

In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The distribution was normally distributed. What percentage of patients would you expect to be in longer than 12.0 weeks?

A standardized test has a mean of 88 and a standard deviation of 12. What is the score at the 90th percentile? Assume a normal distribution.

A z score is a transformed score.

z scores allow comparison of variables that are measured on different scales.

An economics test was given and the following sample scores were recorded: The standard deviation of the distribution is _________.

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The percentile rank of a price of $13.87 is _________.

You have just received your psychology exam grade and you did better than the mean of the exam scores. If so, the z transformed value of your grade must

The area beyond a z score of +2.58 is 0.005.

What is meant by a transformed score? Give an example.

The proportion of scores less than z = 0.00 is _________.

A z score designates how many standard deviations the raw score is above or below the mean.

Assuming the z scores are normally distributed, what is the percentile rank of a z score of - 0.47?

Table A in your textbook has no negative z values, this means _________.

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The percentage of scores that lie between $9.00 and $10.00 is _________.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

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 5: The Normal Curve and Standard Scores

The normal curve is _________.

An economics test was given and the following sample scores were recorded: The z score for individual G is _________.

Given the following z scores, find the area below z :

How much would your income be if its z score value was 2.58?

The standard deviation of the z distribution equals _________.

In a population survey of patients in a rehabilitation hospital, the mean length of stay in the hospital was 12.0 weeks with a standard deviation equal to 1.0 week. The distribution was normally distributed. What percentage of patients would you expect to be in longer than 12.0 weeks?

A standardized test has a mean of 88 and a standard deviation of 12. What is the score at the 90th percentile? Assume a normal distribution.

A z score is a transformed score.

z scores allow comparison of variables that are measured on different scales.

An economics test was given and the following sample scores were recorded: The standard deviation of the distribution is _________.

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The percentile rank of a price of $13.87 is _________.

You have just received your psychology exam grade and you did better than the mean of the exam scores. If so, the z transformed value of your grade must

The area beyond a z score of +2.58 is 0.005.

What is meant by a transformed score? Give an example.

The proportion of scores less than z = 0.00 is _________.

A z score designates how many standard deviations the raw score is above or below the mean.

Assuming the z scores are normally distributed, what is the percentile rank of a z score of - 0.47?

Table A in your textbook has no negative z values, this means _________.

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38. The percentage of scores that lie between $9.00 and $10.00 is _________.

Statistics and Scientific Method

Basic Mathematical and Measurement Concepts

Frequency Distributions

Measures of Central Tendency and Variability

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