Statistics and Probability, NAPX-L4-CA20 v2

Question

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Worked Solution

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Variant 0

DifficultyLevel

614

Question

The stem-and-leaf plot shows the number of lunch diners a small cafe had each day for the last 2 weeks.



On how many days were there at least 25 people dining at lunch?

Worked Solution

The plot shows 7 data points that are at least 25.

∴\therefore 7 days

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
The stem-and-leaf plot shows the number of lunch diners a small cafe had each day for the last 2 weeks.
sm_img https://teacher.smartermaths.com.au/wp-content/uploads/2020/04/NAPX-L4-20-ver3.svg 410 indent3 vpad
On how many days were there at least 25 people dining at lunch?
workedSolution
The plot shows 7 data points that are at least 25. $\therefore$ 7 days
correctAnswer
7

Answers

Is Correct?Answer
x

6

✓

7

x

8

x

10

x

14

Variant 1

DifficultyLevel

614

Question

The stem-and-leaf plot shows the number of movie tickets sold to a foreign film over 15 screenings.



In how many screenings were there at least 30 tickets sold?

Worked Solution

The plot shows 8 data points that are 30 or above.

∴\therefore 8 screenings

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
The stem-and-leaf plot shows the number of movie tickets sold to a foreign film over 15 screenings.
sm_img https://teacher.smartermaths.com.au/wp-content/uploads/2020/04/NAPX-L4-20-ver2.svg 410 indent3 vpad
In how many screenings were there at least 30 tickets sold?
workedSolution
The plot shows 8 data points that are 30 or above. $\therefore$ 8 screenings
correctAnswer
8

Answers

Is Correct?Answer
x

6

x

7

✓

8

x

12

x

15

Variant 2

DifficultyLevel

614

Question

The stem-and-leaf plot shows the number of nippers who attended surf club training each day for the last two weeks.



On how many days were there at least 40 nippers at training?

Worked Solution

The plot shows 4 data points that are 40 or above.

∴\therefore 4 days

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
The stem-and-leaf plot shows the number of nippers who attended surf club training each day for the last two weeks.
sm_img https://teacher.smartermaths.com.au/wp-content/uploads/2020/04/NAPX-L4-20-ver1.svg 410 indent3 vpad
On how many days were there at least 40 nippers at training?
workedSolution
The plot shows 4 data points that are 40 or above. $\therefore$ 4 days
correctAnswer
4

Answers

Is Correct?Answer
x

1

✓

4

x

7

x

10

x

14

Variant 3

DifficultyLevel

616

Question

The stem-and-leaf plot shows the number of buckets of strawberries picked by visitors to a strawberry farm each day for the last two weeks.



On how many days were there at least 25 buckets picked?

Worked Solution

The plot shows 10 data points that are 25 or above.

∴\therefore 10 days

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
The stem-and-leaf plot shows the number of buckets of strawberries picked by visitors to a strawberry farm each day for the last two weeks.
sm_img https://teacher.smartermaths.com.au/wp-content/uploads/2022/09/Stat_Prob_NAPX-J4-CA38_NAPX-J3-CA37_2_v3.svg 410 indent3 vpad
On how many days were there at least 25 buckets picked?
workedSolution
The plot shows 10 data points that are 25 or above. $\therefore$ 10 days
correctAnswer
10

Answers

Is Correct?Answer
x

2

x

4

x

8

✓

10

x

14

Variant 4

DifficultyLevel

616

Question

The stem-and-leaf plot shows the highest points per game scored by LeBron James in the NBA seasons from 2003 to 2021.



In how many seasons was his highest game score at least 76?

Worked Solution

The plot shows 11 data points that are 76 or above.

∴\therefore 11 seasons

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
The stem-and-leaf plot shows the highest points per game scored by LeBron James in the NBA seasons from 2003 to 2021.
sm_img https://teacher.smartermaths.com.au/wp-content/uploads/2022/09/Stat_Prob_NAPX-J4-CA38_NAPX-J3-CA37_2_v4.svg 500 indent3 vpad
In how many seasons was his highest game score at least 76?
workedSolution
The plot shows 11 data points that are 76 or above. $\therefore$ 11 seasons
correctAnswer
11

Answers

Is Correct?Answer
x

3

x

6

x

8

✓

11

x

19

Variant 5

DifficultyLevel

620

Question

The stem-and-leaf plot shows the number of boats launched at the local boat ramp during two weeks of the summer holidays.



On how many days were there at least 12 but less than 31 boats launched?

Worked Solution

The plot shows 7 data points that are at least 12 but less than 31.

∴\therefore 7 days

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
The stem-and-leaf plot shows the number of boats launched at the local boat ramp during two weeks of the summer holidays.
sm_img https://teacher.smartermaths.com.au/wp-content/uploads/2022/09/Stat_Prob_NAPX-J4-CA38_NAPX-J3-CA37_2_v5.svg 420 indent3 vpad
On how many days were there at least 12 but less than 31 boats launched?
workedSolution
The plot shows 7 data points that are at least 12 but less than 31. $\therefore$ 7 days
correctAnswer
7

Answers

Is Correct?Answer
x

2

x

4

✓

7

x

10

x

11

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