WorksheetsStatistics and Probability Challenge
Total questions: 15
Worksheet time: 8mins
What is the mean of the following data set: 4, 8, 6, 5, 3?
5.2
4.5
6.0
7.2
If a die is rolled, what is the probability of rolling an even number?
1/2
2/5
3/6
1/3
In a class of 30 students, 18 are girls. What is the probability of randomly selecting a boy?
0.3
0.5
0.6
0.4
Calculate the median of the following numbers: 12, 15, 11, 10, 14.
14
15
11
12
What is the mode of the data set: 2, 3, 3, 5, 7, 8, 8, 8, 9?
8
5
3
9
If the probability of an event occurring is 0.25, what is the probability of it not occurring?
0.75
1.00
0.10
0.50
A bag contains 5 red balls and 3 blue balls. What is the probability of drawing a red ball?
2/5
1/2
3/8
5/8
What is the range of the following data set: 10, 20, 30, 40, 50?
40
10
30
20
If two coins are flipped, what is the probability of getting at least one head?
3/4
1/4
1/2
2/3
What is the standard deviation of the data set: 2, 4, 4, 4, 5, 5, 7, 9?
2
3
1
5
In a survey, 70% of people prefer tea over coffee. If 200 people were surveyed, how many prefer tea?
180
140
50
100
What is the interquartile range of the data set: 1, 3, 5, 7, 9, 11, 13, 15?
12
10
8
6
If a card is drawn from a standard deck of 52 cards, what is the probability of drawing a heart?
1/2
1/4
1/3
1/5
What is the variance of the following data set: 1, 2, 3, 4, 5?
2
4
3.5
1
In a normal distribution, what percentage of data falls within one standard deviation of the mean?
50%
75%
90%
68%
