Question 7. If the variance for a set of data is 4 units 2 , then the standard d

Question

Question 7.

If the variance for a set of data is 4 units2, then the standard deviation is equal to ________ units.

Question 8 (1 point)

Which of the following is not a required part of the five number summary?

Question 8 options:

minimum

maximum

median

mean

First quartile (Q1)

Question 9 (1 point)

Question 10 (1 point)

The notation used for sample standard deviation is _______.

Question 10 options:

{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#956;</mi></math>"}

{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#963;</mi></math>"}

s

None of the other answer options are correct.

Question 11 (1 point)

Question 12 (1 point)

The following represents the number of Skittles candies in packages from a sample of 7 packages. Find the maximum value. Round to the tenth, if necessary. The maximum is _______ skittles.

Number of Skittles Candies

18

22

15

19

19

16

14   

Question 13 (1 point)

minimum

maximum

median

mean

First quartile (Q1)

Question 9 (1 point)

The following dotplot represents the number of letters in the first and last name for a sample of students.




Find the median number of letters for the names in the sample. Round to the nearest tenth as needed. The median number of letters is ______ letters.

Question 10 (1 point)

The notation used for sample standard deviation is _______.

Question 10 options:

{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#956;</mi></math>"}

{"version":"1.1","math":"<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>&#963;</mi></math>"}

s

None of the other answer options are correct.

Question 11 (1 point)

The boxplot below represents the number of hours spent on the computer on a Tuesday by students in a Statistics class.

What was the median number of hours that students spent on the computer? ______ hours

Question 12 (1 point)

The following represents the number of Skittles candies in packages from a sample of 7 packages. Find the maximum value. Round to the tenth, if necessary. The maximum is _______ skittles.

Number of Skittles Candies

18

22

15

19

19

16

14   

Question 13 (1 point)

The boxplot below represents the number of hours spent on the computer on a Tuesday by students in a Statistics class.

What percentage of the students spent more than 9 hours on the computer? _____%

Explanation / Answer

1. If the variance for a set of data is 4 units2, then the standard deviation is equal to sqrt(4)=2 units

2. mean is not a part of 5 number summary

3. s is used to represent sample standard deviation

4. median number of hours that students spent on the computer is 7 hours which is represented by the dark line in the box plot

5. 22 is the maximum

6. 9 or more will be 25%

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