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Statistics & Probability 9
Statistics & Probability 9
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Year 9#Stats&Probability#RevisionQuiz
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Questions
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Answers
1
The sigma symbol means
frequency
mean
sum
equal
2
The mode or modal values are
72, 87, 100
72
87
100
3
There are 22 students in a class, 12 are girls. The probability of selecting a boy is?
12/22
10
10/22
5/11
4
This graph is said to have a
negative skew
symmetrical distribution
positive skew
normal distribution
5
A bag contains 2 red, 3 green and 2 blue balls. P(not blue) is?
1/4
2/8
5
5/8
6
the probability of not choosing a multiple of 3 from a deck of cards
10
3/13
10/13
40/52
7
The median is
the average
the value that occurs the most
middle value
the edge values
8
A histogram is used to display
the statistics of history
the history of statistics
the mode
numerical data
9
From the histogram how many trees have a height between 150 and 200 cm
25
30
50
40
10
the class centre of a class interval of 10-19 is
15.5
10
15
19
11
the sample space for spinning the spinner is
1, 2, 3, 4, 5, 6, 7, 8
[purple, yellow, blue]
{1, 2, 3, 4, 5, 6, 7, 8}
{purple, red, blue, green}
12
A probability of 1 means an event is
impossible
not very likely
even chance
certain
13
How many students achieved over 90%
7
6
5
2
14
from the letters in Mathematics the P(a)
2/10
2/11
2
1/6
15
the probability of rolling a multiple of 3 on a dice is
1/3
2
2/6
1/6
16
The probability of the spinner landing on the blue section is
1/2
1/4
3/8
3
17
Which of the following data types best describe the number of pets each student in a class has?
categorical
discrete
qualitative
continuous
18
In a lottery, there are 10 prizes and 25 blanks. What is the probability of getting a prize?
2/7
1/10
5/7
2/5
19
The range of scores shown in this stem and leaf plot is
40
19
38
4
20
The probability of choosing a red picture card from a deck of cards is
3/26
6/52
8/52
6
