Statistics Review

What is the Mode?
  22,7,22,1,7,18,18,16,6,6,7

• 7
• 18
• 21
• 6

What is the Median?
8,13,2,4,48

• 8
• 48
• 2
• 9

What is the Mean?
8,5,6,5

• 5
• 45
• 8
• 6

Putting all students names in a hat and randomly picking out 2 is an example of what kind of sample?

• convenience sample
• simple random sample
• systematic random sample
• voluntary response sample

You are trying to decide whether to open up a books store in your neighborhood. You go to the library and ask each person that walks out whether or not a bookstore in your area should be opened.

• convenience sample
• simple random sample
• systematic random sample
• voluntary response sample

Which of the following is an appropriate display to show the heights of 7th grade students arranged by intervals.

• bar graph
• line graph
• circle graph
• histogram

What measure of center should you use to compare 2 sets of data if they are both symmetric? 

• mean
• median
• range
• mode

What measure of center should you use to compare 2 sets of data if one or neither is  symmetric? 

• mean
• median
• mode
• range

1/5 of teens say that soccer is their favorite sport. What is a reasonable prediction for the number of teens out of 1,000 that will say that soccer is their favorite sport?

• 2,500
• 2,000
• 3,000
• 100

A spinner with 4 equal sections is colored red, blue, green, and yellow. is spun 100 times. The spinner lands on red 20 times. What is the experimental probability it does not land on red? 

• 20%
• 80%
• 75%
• 30%