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Biblioteka

Gr. 7- Data Analysis REVIEW

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Pitanje 1
1.

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

Pitanje 2
2.

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

Pitanje 3
3.

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

What is the mean number of games played?

Pitanje 4
4.

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

Pitanje 5
5.

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

What was the mean time?

Pitanje 6
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?

Pitanje 7
7.

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

Pitanje 8
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.

Pitanje 9
9.

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

Pitanje 10
10.

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

Pitanje 11
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.

Pitanje 12
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

Pitanje 13
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?

Pitanje 14
14.

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

Pitanje 15
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.

Pitanje 16
16.

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

Pitanje 17
17.

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

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

Pitanje 18
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.

Pitanje 19
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?

Pitanje 20
20.

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

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

Pitanje 21
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?

Pitanje 22
22.

A game involves spinning this spinner.

What is the probability of the pointer landing on R?

Pitanje 23
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.

Pitanje 24
24.

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

Pitanje 25
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?

Pitanje 26
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.

Pitanje 27
27.

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

Pitanje 28
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?”