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HSC Questions - Preliminary Statistics & Probability Flashcards | StudBud
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HSC Questions - Preliminary Statistics & Probability
HSC Questions - Preliminary Statistics & Probability
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HSC Questions - Preliminary Statistics & Probability
Flashcards
22 cards
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Questions
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Answers
1
A set of data is represented by the cumulative frequency histogram and ogive.
25
30
40
35
2
The box-and-whisker represents a set of scores.
1
5
2
3
3
The following frequency table shows Ravdeeps's scores on a number of quizzes.
(1 + 2 + 3 + 4 + 5)/5
(2 + 6 + 15 + 8 + 5)/13
(2 + 6 + 15 + 8 + 5)/5
(1 + 2 + 3 + 4 + 5)/13
4
The diagram shows a spinner.
2/5
2/3
1/2
1/3
5
The results of a geography test are displayed in a stem-and-leaf plot.
27
15
31
29
6
What is the median of the following set of scores?
13
12
15
14
7
The arrow is spun twice, what is the probability that it points to the same colour both times?
1/2
1/8
1/16
1/4
8
A set of scores is displayed in a stem-and-leaf plot.
30
33
47
28
9
A student is chosen. What is the probability that this student has at least 2 brothers?
0.25
0.10
0.75
0.15
10
What fraction is equal to a probability of 25%?
1/2
1/25
1/3
1/4
11
The mean of a set of 5 scores is 62.
76
62
54
38
12
Each students in a class is given a packet of lollies. The teacher records the number of red.
4/15
11/15
11/19
4/19
13
Joy asked the students in her class how many brothers they had. The answers are recorded below
2.3
2
1.15
4
14
Kay selects marbles from a bag, recorded its colour and returned it to the bag.
1/6
1/24
5/24
1/5
15
Students were surveyed about the number of movies they had watched in the last week.
10
35
5
25
16
The height of each student in a class was measured. The mean height was 160cm.
143cm and 178cm
152cm and 167cm
155cm and 162cm
149cm and 171cm
17
The eye colours of a sample of children were recorded.
Range
Mode
Mean
Median
18
The plots below are on the same scale, they show class scores before and after a unit of work.
The mean decreased and the standard deviation increased.
The mean increased and the standard deviation increased.
The mean increased and the standard deviation decreased.
The mean decreased and the standard deviation decreased.
19
What are the median and the mode for the following set of scores 1, 3, 3, 3, 4, 5, 7, 7, 12
Median 4, mode 3
Median 3, mode 5
Median 3, mode 3
Median 4, mode 5
20
The stem-and-leaf plot represents the daily sales of soft drink from a vending machine.
4
5
24
25
21
What is the range of 1, 3, 3, 3, 4, 5, 7, 7, 12 ?
9
11
12
6
22
Two groups of people were surveyed about their weekly wages. The results are shown below.
C
D
A
B
