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EoY Probability & Statistics revision Flashcards | StudBud
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EoY Probability & Statistics revision
EoY Probability & Statistics revision
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Answers
1
Calculate the modal number of spots per ladybird
5
6
8
7
2
What is P\left(F∪H\right)?
52/80
45/80
79/80
76/80
3
What probability goes on this branch of the tree?
6/10
4/10
3/5
2/5
4
Find the upper quartile of the heights
179cm
190cm
188cm
11cm
5
Calculate the median
27.5
55
22
12.5
6
Calculate the modal class
10<x\le20
30<x\le40
20<x\le30
40<x\le50
7
Calculate the median number of spots per ladybird
6
5
7
8
8
How many players are aged 30 or younger?
27
13
34
20
9
What is the probability Simon has breakfast and Emma is not late for school?
1.3
4.2
0.42
0.13
10
Calculate the median class
40<x\le50
10<x\le20
30<x\le40
20<x\le30
11
The trial is done 200 times. How many times would you expect a Green or a Red?
30
18
6
36
12
Find the probability.
24/24
11/13
13/24
11/24
13
How would you calculate frequency density if drawing a histogram?
frequency \div class width
class width \div frequency
class width \times frequency
frequency \times class width
14
Calculate an estimate for the mean
26
31
390
21
15
Calculate the mean number of spots per ladybird
6.5
32.75
6.6
5
16
What is P\left(H∩R\right)?
36/80
75/80
5/80
31/80
17
Which number would you plot for number of hours if drawing a cumulative frequency curve?
Mid-point of the class
Lower bound of class
Upper bound of the class
18
Find an estimate for the median
£24,000
£30,000
£20,000
£39,000
19
8 people took 20-25 minutes. How many people took 0-10 minutes?
96
48
72
82
20
What is the probability of getting Blue?
0.88
0.78
0.52
0.25
21
A hockey player is selected. What is the probability they play rugby?
36/80
45/80
45/55
36/55
22
60 people were asked what their hobby is. How many said reading?
5
25
15
30
23
What is this called?
Sample space diagram
Multiplication grid
Outcome table
Dice table
24
What is P(prime number?)
15/36
5/18
7/18
13/36
25
How many people played Football but not Hockey?
21
52
4
66
26
Find the mode.
20
10
25
35
27
How many people earned more than £45,000?
57
3
8
42
