Statistics Review Lessons 1-9

Which measure of central tendency best represents this data?

• Mean

• Median

• Mode

• Range

Which class has the higher median?

• 1st period

• 2nd period

• They have the same median

Which class did better on the test?

• 1st period

• 2nd period

• They both performed the same

How is the data distributed in this histogram?

• Symmetrically

• Skewed Right

• Skewed Left

What does the standard deviation tell us about the data set?

• How spread out the numbers are

• How much each number in the data set increases by

• How much each number in the data set decreases by

What is normal distribution?

• A symmetrical bell-shaped graph

• A graph that is skewed to the right

• A graph that is skewed to the left

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 66

• 127

• 193

• 60

Which student has the higher IQR?

• Steven

• Zach

• They have the same IQR

How many total students were surveyed about their number of brothers and sisters?

• 15

• 10

• 6

Calculate the mean.

2, 9, 10, 6, 8

• 8

• 4

• 7

• 22