The table shows the marks scored by 40 students in a test.
Mark | 5 | 6 | 7 | 8 | 9 | 10 |
Frequency | 8 | 5 | 11 | 7 | 5 | 4 |
Calculate the mean mark.
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The table shows the marks scored by 40 students in a test.
Mark | 5 | 6 | 7 | 8 | 9 | 10 |
Frequency | 8 | 5 | 11 | 7 | 5 | 4 |
Calculate the mean mark.
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40 people were asked how many times they visited the cinema in one month.
The table shows the results.
Number of cinema visits | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Frequency | 5 | 6 | 6 | 6 | 7 | 3 | 6 | 2 |
Find the mode.
Calculate the mean.
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The heights, metres, of the 120 boys in an athletics club are recorded.
The table shows information about the heights of the boys.
Height ( metres) |
||||||
Frequency | 7 | 18 | 30 | 24 | 27 | 14 |
Calculate an estimate of the mean height.
............................................. m
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The speed, km/h, of each of 200 cars passing a building is measured.
The table shows the results.
Speed ( km/h) | ||||||
Frequency |
Calculate an estimate of the mean.
........................................ km/h
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The table shows the marks scored by some students in a test.
Mark | 5 | 6 | 7 | 8 | 9 | 10 |
Frequency | 8 | 2 | 12 | 2 | 0 | 1 |
Calculate the mean mark.
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The table shows the time, seconds, taken by each of 120 boys to solve a puzzle.
Time ( seconds) | |||||
Frequency | 38 | 27 | 21 | 16 | 18 |
Calculate an estimate of the mean time.
............................................. s
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20 students each record the mass, grams, of their pencil case.
The table below shows the results.
Mass ( grams) |
|||||
Frequency |
Calculate an estimate of the mean mass.
................................................ g
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A school nurse records the height, cm, of each of 180 children.
The table shows the information.
Height ( cm) | ||||||
Frequency | 8 | 26 | 35 | 67 | 28 | 16 |
Calculate an estimate of the mean.
Give your answer correct to 1 decimal place.
.......................................... cm
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The table shows the amount of time, T minutes, 120 people each spend in a supermarket one Saturday.
Time (T minutes) | Number of people |
16 | |
18 | |
22 | |
40 | |
21 | |
3 |
Use the midpoints of the intervals to calculate an estimate of the mean.
......................................... min
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A factory recycles metal.
The mass, tonnes, of metal is measured each week.
The table shows the results for 52 weeks.
Mass ( tonnes) | ||||
Frequency | 8 | 20 | 12 | 12 |
Calculate an estimate of the mean.
....................................... tonnes
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The time taken for each of 120 students to complete a cooking challenge is shown in the table.
Time ( minutes) | |||||
Frequency |
Write down the modal time interval.
................... ...................
Write down the interval containing the median time.
......................................
Calculate an estimate of the mean time.
......................................... min
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The information below summarises data regarding the heights of plants, measured in centimetres.
Height, h cm | ||||
Frequency | 2 | 18 | 62 | 38 |
Calculate an estimate of the mean height.
............................................ cm
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The students in Class A and in Class B take the same examination.
The lowest score in Class A is 39
The range of scores for Class A is 57
The lowest score in Class B is 33
The range of scores for Class B is 60
Find the range of scores for all the students in both classes.
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Roberto records the value of each of the coins he has at home.
The table shows the results.
Value (cents) | 1 | 2 | 5 | 10 | 20 | 50 |
Frequency | 3 | 1 | 3 | 2 | 4 | 2 |
........................................... cents [1]
........................................... cents [1]
........................................... cents [1]
........................................... cents [2]
........................................... cents [1]
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The test scores of 14 students are shown below.
Find the range, mode, median and mean of the test scores.
Range = ....................................................
Mode = ....................................................
Median = ....................................................
Mean = ....................................................
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A teacher records the number of days each of the 24 students in her class are absent.
The frequency table shows the results.
Number of days | 0 | 1 | 2 | 3 | 4 | 5 |
Frequency | 10 | 8 | 3 | 2 | 0 | 1 |
Find the mode, the median and the mean.
Mode = ...............................................
Median = ...............................................
Mean = ...............................................
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The height, cm, of each of 100 students is measured.
The table shows the results.
Height ( cm) | 100 < ⩽ 150 | 150 < ⩽ 160 | 160 < ⩽ 165 | 165 < ⩽ 185 |
Frequency | 7 | 30 | 41 | 22 |
Calculate an estimate of the mean.
.......................................... cm
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The table shows information about the times, seconds, taken by each of 100 students to solve a puzzle.
Time ( s) | |||||
Frequency |
Calculate an estimate of the mean time.
............................................... s
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The table shows the amount of money, , given to a charity by each of 60 people.
Amount () | |||||
Frequency |
Calculate an estimate of the mean.
................................................
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Bob asked each of friends how many minutes they took to get to work.
The table shows some information about his results.
Time taken (m minutes) | Frequency |
Work out an estimate for the mean time taken.
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Sumeet records the times, in minutes, for 40 runners to finish a half marathon.
Information about these times is shown in the table.
Time ( minutes) | Frequency |
Calculate an estimate for the mean time.
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The frequency table shows the times, minutes, each of 100 children spent exercising in one week.
Time ( minutes) | |||||
Frequency | 41 | 24 | 23 | 8 | 4 |
Calculate an estimate of the mean time.
.......................................... min
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200 students estimate the total area, , of the windows in the classroom.
The table shows their results.
Area (m2) | ||||
Frequency | 32 | 64 | 80 | 24 |
Calculate an estimate of the mean.
You must show all your working.
.......................................... m2
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During one year the midday temperatures, t°C, in Zedford were recorded.
The table shows the results.
Temperature (t°C) | |||||
Number of days | 50 | 85 | 100 | 120 | 10 |
Calculate an estimate of the mean.
............................................... °C
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100 students were each asked how much money, , they spent in one week.
The frequency table shows the results.
Amount | |||||
Frequency | 16 | 38 | 30 | 9 | 7 |
Calculate an estimate of the mean.
$ .............................................
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The frequency table shows information about the number of books read by some students in a reading marathon.
Number of books read | ||||||||
Frequency |
.................................................. [3]
[1]
[1]
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Three sizes of eggs are sold in a shop.
The table shows the number of eggs of each size sold in one day.
Size | Small | Medium | Large |
Mass ( grams) | |||
Number of eggs sold |
Calculate an estimate of the mean mass.
............................................. g
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The frequency table shows information about the time, minutes, that each of 160 people spend in a library.
Time ( minutes) | ||||||
Frequency | 3 | 39 | 43 | 55 | 11 | 9 |
Calculate an estimate of the mean time spent in the library.
......................................... min
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