Mean
Median
Mode
Range and IQR
Mixed Bag
100
Define Mean
The average
100
Define Median
The middle number
100
Define Mode
The number that appears the most
100

Find the range of 15, 21, 26, 25, 21, 23, 28, 21

28 - 15 = 13

100
Find the outlier: 20, 15, 18, 19, 30, 21
30
200
Find the mean of 19, 13, 15, 25, and 18
18
200

Find the median of 15, 19, 20, 29, 36

20

200

Find the mode of 15, 21, 26, 25, 21, 23, 28, 21

21

200

Define Range

Highest score minus lowest score

200

POW

Lose 200 points

300
Find the mean: 18, 24, 17, 21, 24, 16, 29, 18
20.875
300

Find the median of 28, 37, 67, 75, 81, 83,

71

300
Find the mode of 12, 15, 18, 26, 15, 9, 12, 27
12 AND 15
300

Find the IQR of:

12, 14, 14, 16, 16, 17, 18

IQR = 17 - 14 = 3

300

WOO HOO

Take 300 points from the team in first place

400
Cory has received the following grades this term: 75, 87, 90, 88, 79. If he wishes to earn an 85 average, what must he score on his final test?
91
400
Find the median: 55, 47, 38, 66, 56, 64, 44, 63, 39
55
400
Find the mode of 4, 8, 15, 21, 23
No mode
400

How do you calculate the IQR?

Upper quartile - lower quartile

400

Which calculation from range and IQR is least affected by an outlier?

IQR

500

Chad recently launched a new website. In the past six days, he has recorded the following number of daily hits: 37, 29, 37, 56, 45, 38. He is hoping at week’s end to have an average number of 40 hits per day. To achieve this, how many hits must he have on the final day of the week?

38

500

Brian was comparison shopping for DVD players. He decided he wanted to purchase a DVD player that was in the middle of the price ranges. The prices he was quoted include the following: $59.99, $219.99, $79.99, $84.99, $159.99, $109.99, $35.99. Which DVD player did Brian select?

$84.99

500

BONUS TIME

500 points

500

Find the IQR of:

12, 14, 14, 15, 16, 16, 17, 18

IQR = 16.5 - 14 = 2.5

500

Which calculation from mean, median and mode is most affected by an outlier?

Mean

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