Data Management Review Grade 7

Which statements correctly describe the data in this circle graph? Select all that apply.

• 43% of the people surveyed chose chocolate.

• About `1/5` of the people surveyed chose vanilla.

• The circle graph not only shows you how many people chose each flavour, it also helps you compare the sizes of the parts of the survey population that chose each flavour.

• 9000% of the survey population chose strawberry.

• 25% of survey population chose vanilla.

Sally asked her classmates what they had to drink for lunch today. She found that 12 students had juice, 6 students had pop, 4 students had milk, and 3 students had water. Which table matches the data that Sally collected?

• Pop 24%

  Juice 48%

  Water 12%

  Milk 16%

• Pop 18%

  Juice 52%

  Water 16%

  Milk 14%

• Pop 6%

  Juice 12%

  Water 3%

  Milk 4%

• Pop 48%

  Juice 24%

  Water 16%

  Milk 12%

Alec surveyed students in his math class. He asked, “How hard was the last test?”

The following table shows the result of the survey.

Hard 10 %

Slightly Hard 20 %

Okay 30 %

Easy 40 %

Which circle graph represents this data?

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Jared gathered some information online about the bird population in his hometown. The website he read said that in Kenora there were 563 Blackbirds, 1221 Crows, 608 Seagulls, and 618 Blue Jays counted last winter. Which graph represents this data?

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A café owner wants to find out which kinds of muffins her customers like best. She collects this data from last week’s sales.

Blueberry 120

Bran 86

Carrot 114

Banana 92

Chocolate Chip 68

Which statements are true? Choose more than one answer.

• The most popular flavours last week were blueberry and carrot.

• 86% of the muffins that were sold last week were bran muffins.

• 25% of the muffins that were sold last week were blueberry muffins.

• About 24% of the muffins that were sold last week were bran muffins. If the owner has a 2-for-1 sale next week and sells twice as many muffins for each flavour, the percentage for bran muffins will change to 2 × 24% = 48%.

This data shows the change in temperature over a summer day in July.

6 am 24 °C

8 am 26 °C

10 am 29 °C

noon 30 °C

2 pm 31 °C

4 pm 29 °C

6 pm 25 °C

Which type of graph is the best to use to show the temperature change?

• Stem and Leaf Plot

• Bar Graph

• Continuous line graph

• Circle Graph

Bruce asked his friends which video game they wanted to play at his birthday party. He found that 41% of his friends wanted to play Halo, 9% of his friends wanted to play Lego Star Wars,27% of his friends wanted to play Tomb Raider, and 23% of his friends wanted to play Skyrim. Which graph would show this data best?

• Circle graph

• Line graph

• Pictograph

• Bar graph

Heidi asked her friends which colour they like best. She found that 10 people liked blue, 11 people liked green, 11 people like red, and 9 people like pink. Which graph type would work best to display this data?

• Scatter Plot

• Line graph

• Circle graph

• Bar graph

The graph below shows the results of a survey asking people about their favourite fast food. What is misleading about this graph?

• The graph shows that more people like salad than fried chicken.

• The graph shows that more people like french fries than pizza.

• The horizontal axis (Type of Fast Food) does not start at zero.

• The vertical axis (Number of People) does not start at zero.

The table shows the number of Fast food items sold at the Park’s Canteen on Sunday morning.

Fries 6

Hot Dogs 4

Hamburger 3

Which graph is NOT an appropriate display for the type of data shown in the table?

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