# Maths question on statistics

## Quiz by David Okafor

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10 questions
• Q1
What is the mode of the following data set? [2, 4, 6, 8, 8, 10]
2
10
6
8
30s
• Q2
What is the median of the following data set? [1, 3, 7, 9, 12]
9
3
7
12
30s
• Q3
What is the range of the following data set? [3, 8, 11, 14, 17]
14
3
8
17
30s
• Q4
What is the mean of the following data set? [4, 5, 6, 8, 10]
4
8
6.6
5
30s
• Q5
What is the standard deviation of the following data set? [10, 12, 14, 16, 18]
14
2.24
18
12
30s
• Q6
What is the correlation coefficient of the following data set? X: [3, 4, 5, 6, 7] Y: [5, 7, 6, 8, 9]
0.89
0.93
0.96
0.80
30s
• Q7
What is the probability of tossing a coin and getting heads?
0.25
1.0
0.5
0.75
30s
• Q8

If x2   + 4 = 0. Find the value of x

4

none of the above

2

-4

30s
• Q9

If a:b = 5:8, x:y = 25:16, evaluate a/x : b/y

3:4

2:5

125:128

3:5

30s
• Q10

Round up 4625 to 2 significant figures

4000

4620

4600

5000

30s

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