12 Essential math M,M,M,R

The scores on a test are: 12, 15, 15, 15, 18, 20, 22. What is the mean score?

• A) 15

• B) 17.4

• C) 18

• D) 20

What is the median of 12, 15, 15, 15, 18, 20, 22?

• 15

• 18

• 16

• 20

What is the mode of 12, 15, 18, 15, 20, 22, 15?

• 12

• 15

• 18

• 20

What is the range of 12, 15, 18, 15, 20, 22, 15?

• 5

• 10

• 12

• 15

If you remove the largest value from 7, 9, 10, 12, 13, 18, the mean will:

• Increase

• Decrease

• Stay the same

• Not enough info

In drink bottle prices: $12, $16, $14, $17, $75 — how does the $75 affect the mean?

• Raises mean

• Raises median

• Lowers both

• No effect

Why is median sometimes better than mean?

• It uses all data

• It’s faster to calculate

• It’s not affected by outliers

• It’s the smallest value

In scores 2, 3, 5, 5, 9, what does the mode tell you?

• Most common score (5)

• Average score

• Middle score

• Difference between high and low

If no number repeats, what is the mode?

• The largest number

• The smallest number

• No mode

• Zero

Which real-life situation shows why range is important?

• Average income

• Spread of test scores

• Most common product

• Middle house price