Question 1

A researcher reports a significant correlation using an alpha level of .01. The probability that the researcher is making a Type I error is p

Accepted Answer

A) True 
 B)False

Question 2

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?

Accepted Answer

A)   Nominal only
B)   Nominal or ordinal
C)   Ratio only
D)   Interval or ratioE) None of the above
F) A) and B)

Question 3

In a hypothesis test, standard error measures ____.

Accepted Answer

A)   the size of the treatment effect
B)   variability for the sample data
C)   the likelihood of a Type I or Type II error
D)   the amount of difference expected just by chanceE) B) and C)
F) C) and D)

Question 4

The median is the most commonly used measure of central tendency.

Accepted Answer

A) True 
 B)False

Question 5

A negative correlation means that as the X values decrease, the Y values also tend to decrease.

Accepted Answer

A) True 
 B)False

Question 6

A scatter plot shows data points that are widely scattered around a line that slopes down to the right. Which value would be closest to the correlation for these data?

Accepted Answer

A)   80
B)   40
C)   .40
D)   .80E) All of the above
F) B) and D)

Question 7

Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?

Accepted Answer

A)   Slightly above average
B)   Far above average
C)   Slightly below average
D)   Far below averageE) None of the above
F) C) and D)

Exam 15: Statistical Evaluation of Data

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?

Correct Answer
verified

Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?

Correct Answer
verified

The median is the most commonly used measure of central tendency.

Correct Answer
verified

A scatter plot shows data points that are widely scattered around a line that slopes down to the right. Which value would be closest to the correlation for these data?

Correct Answer
verified

In a hypothesis test, standard error measures ____.

Correct Answer
verified

A researcher reports a significant correlation using an alpha level of .01. The probability that the researcher is making a Type I error is p

Correct Answer
verified

A negative correlation means that as the X values decrease, the Y values also tend to decrease.

Correct Answer
verified

Exam 15: Statistical Evaluation of Data

If a frequency distribution is shown in a bar graph, what scale was used to measure the scores?

Correct AnswerverifiedShow Answer

Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?

Correct AnswerverifiedShow Answer

The median is the most commonly used measure of central tendency.

Correct AnswerverifiedShow Answer

A scatter plot shows data points that are widely scattered around a line that slopes down to the right. Which value would be closest to the correlation for these data?

Correct AnswerverifiedShow Answer

In a hypothesis test, standard error measures ____.

Correct AnswerverifiedShow Answer

A researcher reports a significant correlation using an alpha level of .01. The probability that the researcher is making a Type I error is p

Correct AnswerverifiedShow Answer

A negative correlation means that as the X values decrease, the Y values also tend to decrease.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified