Question 1

Draw two distributions with the same standard deviations but different means.

Accepted Answer

The answer of Draw two distributions with the same standard...

Question 2

Mode is to _____ and median is to _____.​

Accepted Answer

A)  interval and ratio data only; nominal data only
B)  nominal data only; ordinal data only
C)  all types of data; ordinal, interval, and ratio data only
D)  none of the options is correctE) A) and D)
F) A) and C)

Question 3

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What is the percentile rank for an individual who consumed 8 cups of coffee per day?​

Accepted Answer

A)  97.72
B)  2.28
C)  47.72
D)  none of the options is correctE) B) and C)
F) All of the above

Question 4

Draw the frequency polygon for the following distribution (there are 30 scores in the distribution). In addition, calculate the mean, median, and mode for the distribution.
48, 50, 53, 59, 59, 63, 63, 67, 67, 67, 72, 72, 72, 78, 78, 78, 78, 85, 85, 85, 85, 85, 90, 90, 90, 90, 95, 95, 98, 100
​

Accepted Answer

​  Mean = 76.57, Median = 78, Mode = 85

Question 5

During the past year, Cindy and Bobby each read 2 books, but Greg read 25, Jan read 12, and Marcia read 9. The median number of books read by these individuals was​

Accepted Answer

A)  2.
B)  9.
C)  10.
D)  50.E) B) and D)
F) A) and B) B

Question 6

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What proportion of faculty consumes an amount between 4 and 6 cups?​

Accepted Answer

A)  0.5468
B)  0.4972
C)  0.50
D)  none of the options is correctE) None of the above
F) A) and B)

Question 7

Calculate the mean, median, and mode for the following sample: 2, 2, 6, 9, 10, 11, 15, 17, 18, 20.​

Accepted Answer

The mean is 11, the ...

Question 8

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. How many cups of coffee would an individual at the 25th percentile drink per day?​

Accepted Answer

A)  4
B)  5
C)  6
D)  7E) None of the above
F) A) and C)

Question 9

Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a standard deviation of 6. Rich's percentile rank would be approximately​

Accepted Answer

A)  70%.
B)  84%.
C)  66%.
D)  cannot determine from the information givenE) All of the above
F) B) and D)

Question 10

Which of the following is a disadvantage of using the range as a measure of variation?​

Accepted Answer

A)  It is limited because only two of the scores in the distribution are used to derive it.
B)  It is easily distorted by an unusually high or low score in a distribution.
C)  It can only be used with nominal data.
D)  It is limited because only two of the scores in the distribution are used to derive it, and it is easily distorted by an unusually high or low score in a distribution.E) A) and B)
F) A) and C)

Question 11

Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation of 1.75 cups. The number of cups of coffee consumed is normally distributed.​

Accepted Answer

What proportion of students co...

Question 12

Arithmetic average is to _____ as score occurring with the greatest frequency is to _____.​

Accepted Answer

A)  mean; median
B)  median; mode
C)  mean; mode
D)  mode; medianE) B) and D)
F) B) and C)

Question 13

Karen's first psychology exam score is ‑1 standard deviation from the mean in a normal distribution. The test has a mean of 75 and a standard deviation of 5. Karen's percentile rank would be​

Accepted Answer

A)  16%.​
B)  54%.
C)  70%.
D)  cannot determine from the information givenE) B) and C)
F) A) and C)

Question 14

A graphical representation of a frequency distribution in which vertical bars are centered above each category along the x-axis and are separated from each other by a space is a _____.​

Accepted Answer

A)  histogram
B)  bar graph
C)  pie graph
D)  frequency polygonE) A) and D)
F) B) and D)

Question 15

Imagine that distribution A contains the following scores: 3, 4, 5, 6, 7. Imagine that distribution B contains the following scores: 1, 3, 5, 8, 10. Distribution A has a _____ standard deviation and a _____ average deviation in comparison to distribution B.​

Accepted Answer

A)  larger; larger
B)  smaller; smaller
C)  larger; smaller
D)  smaller; largerE) A) and D)
F) A) and B)

Question 16

A distribution can have more than one ____ but can have only one _____.​

Accepted Answer

A)  median; mode or mean
B)  mean; mode or median
C)  mode; median or mean
D)  median or mode; meanE) A) and D)
F) None of the above C

Question 17

A table in which the scores are grouped into intervals and listed along with the frequency of scores in each interval is a _____.​

Accepted Answer

A)  bar graph
B)  histogram
C)  class interval frequency distribution
D)  class interval frequency polygonE) A) and B)
F) None of the above

Question 18

Bar graphs are to _____ as frequency polygons are to _____.​

Accepted Answer

A)  quantitative variables; qualitative variables
B)  qualitative variables; quantitative variables
C)  continuous data; discrete data
D)  quantitative variables and continuous data; qualitative variables and discrete dataE) All of the above
F) A) and B)

Question 19

Tom, Tina, & Tori took a verbal aptitude test. The test was normally distributed with a mean of 70 and s = 15. Complete the following table.​

Accepted Answer

The answer of Tom, Tina, & Tori took a verbal...

Question 20

A categorical variable for which each value represents a discrete category is a _____ variable.​

Accepted Answer

A)  qualitative
B)  quantitative
C)  continuous
D)  class intervalE) None of the above
F) C) and D)

Exam 5: Data Organization and Descriptive Statistics

Draw two distributions with the same standard deviations but different means.

Correct AnswerverifiedShow Answer

Mode is to _____ and median is to _____.​

Correct AnswerverifiedShow Answer

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What is the percentile rank for an individual who consumed 8 cups of coffee per day?​

Correct AnswerverifiedShow Answer

Draw the frequency polygon for the following distribution (there are 30 scores in the distribution). In addition, calculate the mean, median, and mode for the distribution. 48, 50, 53, 59, 59, 63, 63, 67, 67, 67, 72, 72, 72, 78, 78, 78, 78, 85, 85, 85, 85, 85, 90, 90, 90, 90, 95, 95, 98, 100 ​

Correct Answerverified​ 11ec1b73_4a22_65ee_bbf8_1de4ac443867_TBX9231_00 Mean = 76.57, Median = 78, Mode = 85

During the past year, Cindy and Bobby each read 2 books, but Greg read 25, Jan read 12, and Marcia read 9. The median number of books read by these individuals was​

Correct AnswerverifiedB

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What proportion of faculty consumes an amount between 4 and 6 cups?​

Correct AnswerverifiedShow Answer

Calculate the mean, median, and mode for the following sample: 2, 2, 6, 9, 10, 11, 15, 17, 18, 20.​

Correct AnswerverifiedThe mean is 11, the ...View AnswerShow Answer

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. How many cups of coffee would an individual at the 25th percentile drink per day?​

Correct AnswerverifiedShow Answer

Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a standard deviation of 6. Rich's percentile rank would be approximately​

Correct AnswerverifiedShow Answer

Which of the following is a disadvantage of using the range as a measure of variation?​

Correct AnswerverifiedShow Answer

Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation of 1.75 cups. The number of cups of coffee consumed is normally distributed.​

Correct AnswerverifiedWhat proportion of students co...View AnswerShow Answer

Arithmetic average is to _____ as score occurring with the greatest frequency is to _____.​

Correct AnswerverifiedShow Answer

Karen's first psychology exam score is ‑1 standard deviation from the mean in a normal distribution. The test has a mean of 75 and a standard deviation of 5. Karen's percentile rank would be​

Correct AnswerverifiedShow Answer

A graphical representation of a frequency distribution in which vertical bars are centered above each category along the x-axis and are separated from each other by a space is a _____.​

Correct AnswerverifiedShow Answer

Imagine that distribution A contains the following scores: 3, 4, 5, 6, 7. Imagine that distribution B contains the following scores: 1, 3, 5, 8, 10. Distribution A has a _____ standard deviation and a _____ average deviation in comparison to distribution B.​

Correct AnswerverifiedShow Answer

A distribution can have more than one ____ but can have only one _____.​

Correct AnswerverifiedC

A table in which the scores are grouped into intervals and listed along with the frequency of scores in each interval is a _____.​

Correct AnswerverifiedShow Answer

Bar graphs are to _____ as frequency polygons are to _____.​

Correct AnswerverifiedShow Answer

Tom, Tina, & Tori took a verbal aptitude test. The test was normally distributed with a mean of 70 and s = 15. Complete the following table.​

Correct AnswerverifiedShow Answer

A categorical variable for which each value represents a discrete category is a _____ variable.​

Correct AnswerverifiedShow Answer

Correct Answer
verified

Mode is to _ and median is to _.

Correct Answer
verified

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What is the percentile rank for an individual who consumed 8 cups of coffee per day?

Correct Answer
verified

Draw the frequency polygon for the following distribution (there are 30 scores in the distribution). In addition, calculate the mean, median, and mode for the distribution. 48, 50, 53, 59, 59, 63, 63, 67, 67, 67, 72, 72, 72, 78, 78, 78, 78, 85, 85, 85, 85, 85, 90, 90, 90, 90, 95, 95, 98, 100

Correct Answer
verified
11ec1b73_4a22_65ee_bbf8_1de4ac443867_TBX9231_00 Mean = 76.57, Median = 78, Mode = 85

During the past year, Cindy and Bobby each read 2 books, but Greg read 25, Jan read 12, and Marcia read 9. The median number of books read by these individuals was

Correct Answer
verified
B

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. What proportion of faculty consumes an amount between 4 and 6 cups?

Correct Answer
verified

Calculate the mean, median, and mode for the following sample: 2, 2, 6, 9, 10, 11, 15, 17, 18, 20.

Correct Answer
verified
The mean is 11, the ...
View Answer

Faculty in the psychology department at State University consume an average of 5 cups of coffee per day with a standard deviation of 1.5. The distribution is normal. How many cups of coffee would an individual at the 25th percentile drink per day?

Correct Answer
verified

Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a standard deviation of 6. Rich's percentile rank would be approximately

Correct Answer
verified

Which of the following is a disadvantage of using the range as a measure of variation?

Correct Answer
verified

Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation of 1.75 cups. The number of cups of coffee consumed is normally distributed.

Correct Answer
verified
What proportion of students co...
View Answer

Arithmetic average is to _ as score occurring with the greatest frequency is to _.

Correct Answer
verified

Karen's first psychology exam score is ‑1 standard deviation from the mean in a normal distribution. The test has a mean of 75 and a standard deviation of 5. Karen's percentile rank would be

Correct Answer
verified

A graphical representation of a frequency distribution in which vertical bars are centered above each category along the x-axis and are separated from each other by a space is a _____.

Correct Answer
verified

Imagine that distribution A contains the following scores: 3, 4, 5, 6, 7. Imagine that distribution B contains the following scores: 1, 3, 5, 8, 10. Distribution A has a _ standard deviation and a _ average deviation in comparison to distribution B.

Correct Answer
verified

A distribution can have more than one but can have only one _.

Correct Answer
verified
C

A table in which the scores are grouped into intervals and listed along with the frequency of scores in each interval is a _____.

Correct Answer
verified

Bar graphs are to _ as frequency polygons are to _.

Correct Answer
verified

Tom, Tina, & Tori took a verbal aptitude test. The test was normally distributed with a mean of 70 and s = 15. Complete the following table.

Correct Answer
verified

A categorical variable for which each value represents a discrete category is a _____ variable.

Correct Answer
verified