Comparing Measure of Center

What is the range?

• average

• biggest-smallest

• the middle #

• happening the most

The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?

• 94 was the highest score on the test.

• More students received a 94 than any other score

• No student scored below a 94

• A score of 91 was slightly below average.

Find the mean:
28, 18, 19, 18, 17

• 20

• 18

• 11

• 19

The height of three basketball players is 210 cm, 220 cm and 191 cm.

What is their average (mean) height?

• 210

• 207

• 220

• 200

Find the median:
5, 6, 3, 9, 0, 4, 1, 2, 7

• 4

• 4.1

• 5

• 4.5

Find the mode:
5, 0, 9, 9, 3, 0, 5, 5, 4

• 9

• 5

• 3

• 7

Which measure of center best represents this set of data?
12, 13, 11, 16, 31, 14, 10, 15

• Mean

• median

• mode

The mean is found by ___________________ all of the numbers and then _____________________ by the number of items.

• adding, subtracting

• adding, multiplying

• dividing, adding

• adding, dividing

Find the median:
3, 5, 7, 4, 3, 1

• 3 and 4

• There isn't one

• 3.5

• 3

calculate the median for the following set of scores

45, 69, 69, 87, 88, 92, 99, 100

• 87

• 55

• 87.5

• 99