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Data Collection and Categories

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Data Collection and Categories

A tiny café is planning a fruit smoothie. Read each question carefully, use the data displays, and help the café make a choice.

Ask and sort

An investigative question can be answered by collecting information. Categories are the groups used to sort the answers.

1.Which question could the café answer by asking customers and collecting their answers?

What is the café’s favourite smoothie flavour?
What is a smoothie?
How many minutes are in an hour?

2.The café asks, “Which fruit would you like in a smoothie?” Name two useful categories for sorting the answers.

3.Which is the clearest set of categories for sorting favourite fruit answers?

Apple, banana, kiwifruit, strawberry
Yummy, juicy, nice
Small, big, tasty

Read the tally chart

Customers chose one favourite smoothie fruit. Each group of five tally marks has four strokes and a crossing fifth stroke.

Fruit

Tally and number

Apple

||||/ ||||/ || (12)

Banana

||||/ |||| (9)

Kiwifruit

||||/ ||| (8)

Strawberry

||||/ ||||/ | (11)

4.Which fruit was chosen by the most customers?

5.Which fruit was chosen by the fewest customers?

6.How many customers chose banana or strawberry altogether?

7.How many more customers chose apple than kiwifruit? Show your number sentence.

8.The café wants to make enough apple smoothies for everyone who chose apple. How many should it make?

Make a tally

A new taste test has five votes for mango. Show five tally marks. Remember that the fifth mark crosses the first four.

9.Draw tally marks to record five votes for mango.

10.Choose one question the café could investigate next, then write two categories it could use. For example, ask about a favourite topping or a preferred cup size.