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Year 10 Statistics 2
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A school's sport program has 5 different sports available. The graph shows the proportion of students playing each sport during a sport session. Each student can play only one sport. There are 36 students playing football. What is the total number of students who are playing sport?
1 point
90
144
180
270
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The following frequency table shows Jim’s scores on a number of quizzes. Which expression gives Jim’s mean score?
1 point
A
B
C
D
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What is the range of scores in this class test?
1 point
27
28
29
35
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Find the median score for boys in this class test
1 point
12
15
19
21
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The dot plots below are drawn on the same scale. They show the class scores in tests taken before and after a unit of work was completed. Which statement about the change in scores is correct?
1 point
The mean increased and the standard deviation decreased.
The mean increased and the standard deviation increased.
The mean decreased and the standard deviation decreased.
The mean decreased and the standard deviation increased.
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Which scatterplot shows a low (weak) positive correlation?
1 point
A
B
C
D
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Jill asked the students in her class how many brothers they had. The answers were recorded in the frequency table below. What is the mean number of brothers?
1 point
1.15
2
2.3
4
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For the scores 1, 3, 3, 3, 4, 5, 7, 7, 12 the range is
1 point
6
9
11
12
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For the scores 1, 3, 3, 3, 4, 5, 7, 7, 12 the median and mode are is
1 point
median 3, mode 5
median 3, mode 3
median 4, mode 5
median 4, mode 3
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The interquartile range for the box-and-whisker plot drawn below is
1 point
1
2
3
5
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The mean of the scores 3, 4, 5, 6, 6, 8, 8, 8, 15 is
1 point
6
7
8
9
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A set of scores is displayed in a stem-and-leaf plot. What is the median of this set of scores?
1 point
28
30
33
76
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The mean of a set of 5 scores is 62. What is the new mean of the set of scores after a score of 14 is added?
1 point
38
54
62
76
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This set of data is arranged in order from smallest to largest. 5, 6, 11, x, 13, 18, 25 The range is six less than twice the value of x.Which one of the following is true?
1 point
The median is 12 and the interquartile range is 7.
The median is 12 and the interquartile range is 12.
The median is 13 and the interquartile range is 7.
The median is 13 and the interquartile range is 12.
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What type of data is generated by the survey question "How many pets do you have?"
1 point
Numerical and Continuous
Numerical and Discrete
Categorical and Continuous
Categorical and Ordinal
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Which of the statements about the data set {6, 6, 9, 9, 12, 18} is true?
1 point
The mode is 18
The mode and median have the same value
The range is 9
The mean is the same as the mode.
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