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6.3 Designing data-collection sheets

) Exercise 6.3

1 Harsha carries out an experiment with a spinner.
The sections of the spinner are coloured red, yellow, blue and green, as shown.
She spins the spinner 100 times and records the colour the spinner lands
on each time.
Design a suitable data-collection sheet for her.
2 Razi does a survey on the make of cars that pass his house one Saturday.
He records the makes ‘BMW’, ‘Ford’, ‘Nissan’, ‘Toyota’, ‘Vauxhall’ and ‘Other’.
Design a suitable data-collection sheet for him.
3 Mia asks 100 students in her school how many times they have been to a foreign country.
Design a suitable data-collection sheet for her. (The highest number of times is six.)

4 Dakarai has two tetrahedral dice, numbered 1 to 4.
He rolls the dice together and adds the numbers they show 1 2 3 1
to get a score.
He decides to do this 150 times and record each score he gets.
a Design a data-collection sheet for Dakarai.
b Compare your data-collection sheet with a partner’s, in your class.
i Are your data-collection sheets the same or similar?
ii Could you improve your data-collection sheet? If so, explain how you would do it.
5 Shen investigates the favourite flavour of ice-cream of the students in his school.

He asks 30 students from each stage, from 7 to 11, to take part. He asks them to choose their

favourite flavour from vanilla, strawberry, chocolate, raspberry ripple, mint choc-chip or ‘other’.
a Design a data-collection sheet for Shen.
b Compare your data-collection sheet with a partner’s, in your class.
i Are your data-collection sheets the same or similar?
ii Could you improve your data-collection sheet? If so, explain how you would do it.

For questions 6 and 7, work in groups of two or three. Discuss the answers to each question and then write
down your answers. Compare your answers with other groups.

6 Tanesha is investigating the age of the workers in a factory. Age (years) Tally Frequency
She uses this data-collection sheet. 20−30
She asks 100 workers to say which age group they are in. 30−40
a Give two reasons why her data-collection sheet is 40−50
not suitable. Total
b Design a better data-collection sheet.
7 Zalika is comparing the fitness of men and women. Number of times Tally Frequency

She asks 50 men and 50 women how many times 1−2
they exercise each week. 2−4
She records the information on this data-collection sheet. 4−6
a Give three reasons why her data-collection sheet is
not suitable.
b Design a better data-collection sheet.

60 6 Planning and collecting data