W7.1

Front

W7.1

Lovely Lucy has a beautiful shop in town that sells all kinds of ladies’ clothing, from colourful blouses to pretty dresses and tailored trousers.

Monday dress sales: $40 $45 $50 $40 $42 $39 $40

• - What was the average price paid? (Mean)

• - What was the range of prices paid?

Back

Hint:

To calculate the MEAN: add up all the values then divide by the number of values

To calculte the RANGE: subtract the smallest value from the biggest value.

Front

another question:

Tuesday trouser sales: $25 $28 $29 $27 $25 $27 $27

• - What was the average price paid? (Mean)

• - What was the range of prices paid?

Back

Answers:

Monday:

mean: 387/9 = 43 > $43

range: 50 - 39 = 11 > $11

Tuesday:

Mean: 188/7 = 26.857..... > $26.86

Range: 29 - 25 = 4 > $4