Mean and Statistics

How do you find the median of a data set that has two middle numbers?

• You pick the higher middle number

• You pick the lower middle number

• Add the two middle numbers and divide it by 2

• Subtract the two middle numbers and divide by 2

Which measure of central tendency would best represent this data?

• Mean

• Median

• Mode

• Range

Which measure of central tendency best represents this data?

• Mean

• Median

• Mode

• Range

The mean of this data set is 17.8. What would happen to the mean if 40 was added to the data set?

• The mean would not change

• The mean would go up

• The mean would go down

How is the data distributed in this histogram?

• Symmetrically

• Skewed Right

• Skewed Left

What is the mean of this set of data?

2, 15, 7

• 24

• 3

• 6

• 8

-center number of a data set

• mean
• median
• mode
• range

Calculate the MEAN for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

• 7

• 7.44

• 8

• 7 and 8

Calculate the MEDIAN for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

• 7

• 7.44

• 8

• 7 and 8

How many 7th graders had an IQ score in the 81-90 range?

• 13

• 6.5

• 3

• 42