1. Phone Bill Your dad tells you that you can have your own phone if you pay the bill. He shows you a list of how much the calls you made the few past months have cost: $12, $15, $16, $17, $17, $30, $52
Calculate:
mean=
median=
mode=
$22.71
Which measure of central tendency would you use if you were the…
$17
Dad?
Child?
$17

2. Advantages and disadvantages if you are a…
Summer Job
Hamburger restaurants are often competing to get good part-time help. One store has jobs paying the following hourly wages: $5.85, $6.00, $6.00, $6.25, $6.50, $6.75, $7.50, and $18.50.
Calculate:
mean=
median=
mode=
$7.92
Advantages and disadvantages
if you are a…
$6.38
Restaurant Manager?
Potential employee?
$6.00

3. Bicycle Shop
A bicycle shop is trying to restock for the summer. It is your job to find out which bicycle tires should be ordered. You have the previous months’ sales to help you decide.
Tire size Number sold
18”
20”
24”
27”
Calculate mean, median, and mode and discuss the advantages and disadvantages of each.

4. Band Practice
You need a place for your band to practice. Your mom says you can use the garage if your band can pay for the electricity. You and the band discuss the amounts you have made from your performances in the previous months.
July: $ August: $80
September: $0 October: $90
November: $0 December: $300
January: $ February: $75
March: $ April: $0
Calculate mean, median, and mode and discuss the advantages and disadvantages of each.

5. Choosing Central Tendency
Mean – Usually the best representation
Median – use when there is an outlier
Mode – Use when looking for the favorite
or most desired.