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Elements of descriptive statistics

reading data from lists (total, difference, largest and smallest value, how the values change), counting and ordering data

Exercises are drawn at random from a large bank - every click gives a different set.

Solved: 0 of 10

1

How many tickets were sold altogether on all these days?

Monday: 13, Tuesday: 17, Wednesday: 31, Thursday: 30, Friday: 35, Saturday: 17

2

How many more points does Peter have than Kate?

Kate: 24, Jacob: 11, Ola: 14, Peter: 31, Sophie: 7, Adam: 13

3

After how many weeks was the plant 12 cm tall?

Pupils planted a bean and measured the height of the plant every week. The line graph shows the results.

Line graph. Vertical axis: height (cm), from zero, every line labelled. Horizontal axis: time (weeks).024681012141618height (cm)0123456time (weeks)
4

How many millimetres of rain fell in June?

The bar chart shows how many millimetres of rain fell in a certain town in each month from April to September.

Bar chart. Vertical axis: rainfall (mm), scale from zero, every line labelled.010203040506070rainfall (mm)AprilMayJuneJulyAugustSeptember
5

How many pupils chose purple?

The favourite colours of the pupils in one class: purple, blue, purple, blue, green, yellow, blue, yellow, blue, blue, red, red, blue, blue, blue, green, purple, yellow.

6

Which phrase describes how the water level in the river changed from Tuesday to Thursday?

Monday: 238 cm, Tuesday: 222 cm, Wednesday: 227 cm, Thursday: 243 cm, Friday: 240 cm, Saturday: 236 cm, Sunday: 228 cm

7

How much more rain fell in the wettest month than in the driest month?

March: 76, April: 43, May: 32, June: 69, July: 42

8

In which month did the most rain fall?

March: 77, April: 67, May: 39, June: 10, July: 37, August: 28

9

Put the numbers of points scored in order from smallest to largest. Which number is in position 3?

Kate: 6, Jacob: 17, Ola: 6, Peter: 5, Sophie: 13

10

On how many days were more than 25 tickets sold?

Monday: 25, Tuesday: 36, Wednesday: 28, Thursday: 24

This address is one particular set - everyone who opens it gets exactly the same exercises. Copy the link from the address bar and send it to the class. You can generate a new set at the top of the page.

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Elements of descriptive statistics - exercises with solutions | PhiBoard