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Laabri

Gr. 7- Data Analysis REVIEW

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Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Find the mean of this set of data: 7, 9, 11, 13

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

Find the mode of this set of data: 15, 22, 22, 28, 28, 28, 32

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3.

In the last 3 seasons, Jordan played 55, 63, and 56 games.

What is the mean number of games played?

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4.

Calculate the mean of this set of data: 6, 15, 27, 9, 12, 3, 18, 24, 21

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5.

Cecil’s practice times, in seconds, for the 400 m race were: 127, 124, 116, 127, 121

What was the mean time?

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6.

This list gives the collar sizes, in centimetres, of shirts sold in a store:39, 37, 38, 38, 37, 40, 36, 39, 38, 39, 37, 38

What is the mode collar size?

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7.

Find the mean and mode of this set of data: 16, 19, 7, 22, 19, 13, 23

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8.

Here are the monthly savings, in dollars, that Mary saved for a year:

23, 26, 18, 38, 38, 38, 20, 20, 29, 31, 28, 27

Find the mean amount of money saved.

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9.

Find the range of this set of data: 16, 20, 20, 28, 31, 32, 35, 39

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10.

Find the median of this set of data: 5, 58, 15, 3, 59, 20, 11, 52, 5

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11.

Ron was in charge of collecting contributions for the Food Bank.

He received $50, $21, $32, $11, and $48 from 5 co-workers.

Find the median of these contributions.

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12.

Which 2 data sets have a median of 24?

P: 24, 28, 17, 25, 20

Q: 18, 28, 26, 24, 25

R: 22, 29, 26, 24, 16

S: 17, 24, 23, 21, 29

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13.

A sample of 16 boxes of cereal is selected from the production line for quality check. The masses of the boxes, in grams, are:

304, 314, 313, 298, 293, 307, 298, 310, 307, 298, 317, 298, 317, 313, 317, 313

What is the median mass?

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14.

Find the median and the range of this set of data: 48, 54, 50, 37, 57, 54, 58, 42

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15.

The hourly wages, in dollars, of 10 students are: 11, 12, 10, 13, 8, 8, 7, 8, 11, 9

Find the median and the mode.

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16.

Identify the outlier in this set of data: 14, 15, 18, 13, 19, 3, 18

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17.

Bob’s scores on 4 history tests are: 65, 70, 62, 57

What is the mean score, rounded to the nearest whole number?

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18.

Terry’s times, in minutes, for his training runs were: 47, 48, 49, 51, 50, 50, 47, 52

Find Terry’s average run time.

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19.

Don receives these marks on 4 math tests: 75, 85, 83, 90

What mark must he get on the next math test to have a mean of 84 for 5 tests?

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20.

Find the mean, median, mode, and range of this set of temperature data.

Temperature (°C): 1, 1, 2, 3, 5, 8, 16, 23

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21.

Jay was absent for a math test. The test scores of his classmates were: 81, 90, 72, 95, 77, 50, 74, 83, 62, 86, 82, 55, 50, 52

Jay took a makeup test. What was Jay’s score if the class mean was 71?

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22.

A game involves spinning this spinner.

What is the probability of the pointer landing on R?

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23.

A pencil case contains 2 red felt pens, 3 white felt pens, and 7 blue felt pens.

You pick a pen without looking. Find the probability of picking a white pen.

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24.

A die labelled 1 to 6 is rolled. Find the probability of rolling a number greater than 2.

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25.

The pointer on this spinner is spun once. What is the probability that the pointer will land on an even number in the unshaded area?

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26.

Twenty cards are numbered from 1 to 20. One card is drawn without looking. What is the probability that the number on the card is divisible by 7?

Express the probability as a percent.

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27.

Use a tree diagram to find how many ways you can arrange the letters in STEM.

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28.

A coin is tossed and a die labelled 1 to 6 is rolled.

What is the probability of the event “a head on the coin and a 5 on the die?”