Grade 7 Data Management

Use the graph above to answer Questions 1, 2 ,3.

Question 1

What is the total amount of rainfall in the cities shown?

• 260 cm

• 360 cm

• 305 cm

• 380 cm

What is the approximate mean rainfall in the 6 cities?

• 40 cm

• 50 cm

• 30 cm

• 60 cm

What other type of graph could be used to illustrate the data?

• Circle Graph

• Broken-line Graph

• Stem and Leaf diagram

• pictograph

What percent of people listened to the three most popular radio stations?

• 55%

• 75%

• 90%

• 70%

500 people were surveyed. How many people preferred listening to CJAB? (Hint: The percent OF 500)

• 20

• 340

• 80

• 100

Name the median in the set of data:

5,2,14,15,1,1,11

• 15

• 1

• 5

• 7

The number of passengers travelling on a bus was recorded each day for a week. Calculate the mean number of passengers on the bus.

• 26

• 29

• 25

• 105.2

What is the range for the data shown?

• 15

• 16

• 3

• 20

Which set of data has a median of 4?

• 3,7,4,9,14

• 1,4,4,5,7,9,12

• 9,4,1,12,15,1,2

• 2,2,3,9

Which set of data has the highest mean salary?

• $12 000, $14 000, $18 000, $18 500

• $13 000, $13 000, $13 000, $86 500

• $17 000, $18 000, $19 000, $20 000

• $18 000,$21 000, $22 000, $31 0000