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Year 9 Probability/Stats Revision #1

Mathematics

9th Grade

CCSS covered

Used 8+ times

Year 9 Probability/Stats Revision #1
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26 questions

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1.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Jacob achieved scores of 12, 9, 7, 12 in his last four science tests. What score must he get in his next test to have a mean of 11?

16

14

11

13

15

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

What is the probability of rolling a number less than 5 on a normal dice?

13\frac{1}{3}

4

12\frac{1}{2}

23\frac{2}{3}

3

3.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

In a bag of 40 marbles, 28 are blue. If a marble is selected 50 times with replacement, the number of blue marbles you would expect to select is:

28

38

70

35

40

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

The median, mean and range of the data set

12, 3, 1, 6, 10, 1, 5, 18, 11, 15

are, respectively:

5.5, 8.2, 1−18

8, 8.2, 17

5.5, 8, 17

8, 8.2, 1−18

8, 74.5, 18

5.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

A coin is flipped 3 times, determine the probability that we will get exactly two heads

3/8
2/8
1/2
1/4

Tags

CCSS.7.SP.C.8B

6.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

The outcome table below shows the possible results of rolling a dice and flipping a coin.  Determine the probability of getting a head OR an even number in simplified form.

9/12
3/4
1/2
1/3

Tags

CCSS.7.SP.C.8

CCSS.7.SP.C.5

CCSS.7.SP.C.7

7.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Media Image

The outcome table below shows the possible results of rolling a dice and flipping a coin.  Determine the probability of getting a number less than 5 OR a tail.

4/12
4/20
8/12
10/12

Tags

CCSS.HSS.CP.B.7

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