Question 1

Which of the following is another name for the normal curve?

Accepted Answer

A)  Asymptotic 
B)  Symmetry 
C)  Probability 
D)  Bell-shaped 
A)  Asymptotic 
B)  Symmetry 
C)  Probability 
D)  Bell-shaped D

Question 2

Write the formula for calculating a z score.

Accepted Answer

$z = \frac { ( X - \bar { X } ) } { s }$

Question 3

What are the characteristics associated with the normal curve?

Accepted Answer

Mean, median, and mode are equal to one another; perfectly symmetrical at the mean; tails of the normal curve are asymptotic.

Question 4

What percentage of scores will fall between the mean and 1 standard deviation above the mean?

Accepted Answer

About 34% (actually 34.13%) of

Question 5

How many standard deviations are included in a normal distribution with a mean of 100 and a standard deviation of 10?

Accepted Answer

In a normal distribution with

Question 6

If a coin is flipped 10 times, how many combinations or outcomes are possible?

Accepted Answer

A)  10² 
B)  2¹? 
C)  10¹? 
D)  2² 
A)  10² 
B)  2¹? 
C)  10¹? 
D)  2²

Question 7

What is the z score for a raw score of 85 where the group mean is 75 and the standard deviation is 5?

Accepted Answer

A)  -2 
B)  2.5 
C)  2 
D)  -2.5 
A)  -2 
B)  2.5 
C)  2 
D)  -2.5

Question 8

If a z score of 1.65 included 45% of the area under the normal curve from the mean, what percent remains above 1.65 on the x-axis?

Accepted Answer

A)  5% 
B)  25% 
C)  85% 
D)  95% 
A)  5% 
B)  25% 
C)  85% 
D)  95%

Question 9

What type of standard score has M = 0 and SD = 1?

Accepted Answer

A)  IQ score 
B)  T score 
C)  x score 
D)  z score 
A)  IQ score 
B)  T score 
C)  x score 
D)  z score

Question 10

What percent of all scores fall below a z score of +1?

Accepted Answer

A)  16% 
B)  34% 
C)  50% 
D)  84% 
A)  16% 
B)  34% 
C)  50% 
D)  84%

Question 11

Which of the following characteristics is associated with the "tails" of the normal curve?

Accepted Answer

A)  Asymptotic 
B)  Symmetry 
C)  Probability 
D)  Bell-shaped 
A)  Asymptotic 
B)  Symmetry 
C)  Probability 
D)  Bell-shaped

Question 12

If you know the z score, standard deviation, and mean, what formula would you use to compute the raw score?

Accepted Answer

A)  $X = ( \ { z } + s ) / \bar { X }$ 
B)  $\bar { X } = z ( s ) + X$ 
C)  $X = z ( s ) + \bar { X }$ 
D)  $z = \bar { X } - X / s$ 
A)  $X = ( \ { z } + s ) / \bar { X }$ 
B)  $\bar { X } = z ( s ) + X$ 
C)  $X = z ( s ) + \bar { X }$ 
D)  $z = \bar { X } - X / s$

Question 13

If the z score is -.5 in a distribution with a mean of 50 and a standard deviation of 5, what is the raw score?

Accepted Answer

A z score of -.5 in

Question 14

If the null hypothesis claims that there is no difference between groups, what is the likelihood of no difference occurring assumed to be?

Accepted Answer

If the null hypothesis claims

Question 15

Approximately what percent of scores fall between the mean and -1 to +1 standard deviations under the normal curve?

Accepted Answer

A)  34% 
B)  14% 
C)  68% 
D)  95% 
A)  34% 
B)  14% 
C)  68% 
D)  95%

Question 16

Which of the following is a characteristic of the normal curve?

Accepted Answer

A)  Mean, median, and mode are different 
B)  Mean and median are the same but mode is different 
C)  Mean and mode are the same but median is different 
D)  Mean, median, and mode are the same 
A)  Mean, median, and mode are different 
B)  Mean and median are the same but mode is different 
C)  Mean and mode are the same but median is different 
D)  Mean, median, and mode are the same

Question 17

If you fold a normal curve, each half would fit perfectly on top of the other. This characteristic is known as _______________.

Accepted Answer

A)  Mean, median, and mode 
B)  Symmetry 
C)  Asymptotic 
D)  Probability 
A)  Mean, median, and mode 
B)  Symmetry 
C)  Asymptotic 
D)  Probability

Question 18

Approximately what percent of scores fall between -1 and -2 standard deviations under the normal curve?

Accepted Answer

A)  34% 
B)  14% 
C)  68% 
D)  95% 
A)  34% 
B)  14% 
C)  68% 
D)  95%

Question 19

What do standard scores allow researchers to do that raw scores cannot?

Accepted Answer

Standard scores allo

Question 20

How is the T score calculated?

Accepted Answer

The T score is a type of stand

Which of the following is another name for the normal curve?

Write the formula for calculating a z score.

What are the characteristics associated with the normal curve?

What percentage of scores will fall between the mean and 1 standard deviation above the mean?

How many standard deviations are included in a normal distribution with a mean of 100 and a standard deviation of 10?

If a coin is flipped 10 times, how many combinations or outcomes are possible?

What is the z score for a raw score of 85 where the group mean is 75 and the standard deviation is 5?

If a z score of 1.65 included 45% of the area under the normal curve from the mean, what percent remains above 1.65 on the x-axis?

What type of standard score has M = 0 and SD = 1?

What percent of all scores fall below a z score of +1?

Which of the following characteristics is associated with the "tails" of the normal curve?

If you know the z score, standard deviation, and mean, what formula would you use to compute the raw score?

If the z score is -.5 in a distribution with a mean of 50 and a standard deviation of 5, what is the raw score?

If the null hypothesis claims that there is no difference between groups, what is the likelihood of no difference occurring assumed to be?

Approximately what percent of scores fall between the mean and -1 to +1 standard deviations under the normal curve?

Which of the following is a characteristic of the normal curve?

If you fold a normal curve, each half would fit perfectly on top of the other. This characteristic is known as _______________.

Approximately what percent of scores fall between -1 and -2 standard deviations under the normal curve?

What do standard scores allow researchers to do that raw scores cannot?

How is the T score calculated?

Statistics or Sadistics? It’s Up to You

Means to an End: Computing and Understanding Averages

Vive La Différence: Understanding Variability

A Picture Really Is Worth a Thousand Words

Ice Cream and Crime: Computing Correlation Coefficients

Just the Truth: An Introduction to Understanding Reliability and Validity

Hypotheticals and You: Testing Your Questions

Significantly Significant: What It Means for You and Me

Only the Lonely

t(ea) for Two (Again): Tests Between the Means of Related Groups

t(ea) for Two (Again): Tests Between the Means of Related Groups

Two Groups Too Many? Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variance

Cousins or Just Good Friends? Testing Relationships Using the Correlation Coefficient

Predicting Who’ll Win the Super Bowl: Using Linear Regression

What to Do When You’re Not Normal: Chi-Square and Some Other Nonparametric Tests

Some Other (Important) Statistical Procedures You Should Know About

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Exam 8: Are Your Curves Normal? Probability and Why It Counts

Which of the following is another name for the normal curve?

Write the formula for calculating a z score.

What are the characteristics associated with the normal curve?

What percentage of scores will fall between the mean and 1 standard deviation above the mean?

How many standard deviations are included in a normal distribution with a mean of 100 and a standard deviation of 10?

If a coin is flipped 10 times, how many combinations or outcomes are possible?

What is the z score for a raw score of 85 where the group mean is 75 and the standard deviation is 5?

If a z score of 1.65 included 45% of the area under the normal curve from the mean, what percent remains above 1.65 on the x-axis?

What type of standard score has M = 0 and SD = 1?

What percent of all scores fall below a z score of +1?

Which of the following characteristics is associated with the "tails" of the normal curve?

If you know the z score, standard deviation, and mean, what formula would you use to compute the raw score?

If the z score is -.5 in a distribution with a mean of 50 and a standard deviation of 5, what is the raw score?

If the null hypothesis claims that there is no difference between groups, what is the likelihood of no difference occurring assumed to be?

Approximately what percent of scores fall between the mean and -1 to +1 standard deviations under the normal curve?

Which of the following is a characteristic of the normal curve?

If you fold a normal curve, each half would fit perfectly on top of the other. This characteristic is known as _______________.

Approximately what percent of scores fall between -1 and -2 standard deviations under the normal curve?

What do standard scores allow researchers to do that raw scores cannot?

How is the T score calculated?

Statistics or Sadistics? It’s Up to You

Means to an End: Computing and Understanding Averages

Vive La Différence: Understanding Variability

A Picture Really Is Worth a Thousand Words

Ice Cream and Crime: Computing Correlation Coefficients

Just the Truth: An Introduction to Understanding Reliability and Validity

Hypotheticals and You: Testing Your Questions

Significantly Significant: What It Means for You and Me

Only the Lonely

t(ea) for Two (Again): Tests Between the Means of Related Groups

t(ea) for Two (Again): Tests Between the Means of Related Groups

Two Groups Too Many? Try Analysis of Variance

Two Too Many Factors: Factorial Analysis of Variance

Cousins or Just Good Friends? Testing Relationships Using the Correlation Coefficient

Predicting Who’ll Win the Super Bowl: Using Linear Regression

What to Do When You’re Not Normal: Chi-Square and Some Other Nonparametric Tests

Some Other (Important) Statistical Procedures You Should Know About

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