6.1 - 6.4 review

What is the mode from the data set?

• 25

• 31

• none

• 25, 26, 30, 31

What is the mean of the data?

• 32.4

• 32.05

• 31.96

• 31.14

A test average is 68.3 with a standard deviation of 4.7. What is the z - score for a student who earned a 78% on their test?

• 2.06

• -2.06

• 1.79

• -1.79

What is the IQR from the box and whisker plot?

• 6

• 7

• 4

• 5

Which number is the median?

• 2

• 3.5

• 6

• 9

Which set of data would fit best for the box and whisker plot?

• 1,3,6,5,2,3,6,9,4,5

• 3,5,2,6,3,4,8,2,12

• 6,5,4,1,2,5,9,8,10

• 2,8,6,5,7,9,8,5,6,3,2,4,7

You pick every 50th person to give a survey to in a coffee shop. What kind of sampling is this?

• Random

• Systematic

• Stratified

What does this symbol represent?

• Mean
• Median
• Mode 
• Standard Deviation

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1
• 6
• 4.5
• 4