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WorksheetsUnit 7: Probability & Statistics Review
Total questions: 15
Worksheet time: 52mins
Name
Class
Date
1.
The scores awarded to 25 students for an assignment were as follows:
4 7 5 9 8 6 7 7 8 5 6 9 8 5 8 7 4 7 3 6 8 9 7 6 9
What is the mode?
4 7 5 9 8 6 7 7 8 5 6 9 8 5 8 7 4 7 3 6 8 9 7 6 9
What is the mode?
a)
6
b)
7
c)
8
d)
9
2.
What is the mean of these numbers?
4,5,5,2,3,3,2,8
4,5,5,2,3,3,2,8
a)
40
b)
24
c)
4
d)
256
3.
A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?
a)
5/6
b)
1/2
c)
1/3
d)
1/6
4.
What is the probability of getting an odd number when rolling a single 6 sided die?
a)
1/6
b)
2/6
c)
3/5
d)
3/6
5.
Put data set in order from least to greatest and find the middle number.
a)
Finding the Median
b)
Finding the Mode
c)
Finding the Mean
d)
Range
6.
Find the median, mode and range:
3, 5, 7, 9, 11, 8, 3
3, 5, 7, 9, 11, 8, 3
a)
median:7 mode:3 range:8
b)
median:6 mode:3 range:7
c)
median:7 mode:3 range:8
7.
A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?
a)
3/10
b)
3/9
c)
1/9
d)
1/3
8.
A bag contains 30 pieces of candy. There are 15 grape, 7 cherry, 3 lemon, 5 strawberry. What is the probability of drawing a lemon?
a)
3
b)
1/10
c)
3/10
d)
30%
9.
P(not A) =
*Remember to simplify.*
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
10.
The probability of it raining today is 30%. What is the probability that it will NOT rain?
a)
30%
b)
70%
c)
100%
d)
0%
11.
What is the probability of spinning the spinner and having it land on RED?
a)
33%
b)
50%
c)
12%
12.
What is the probability of spinning a 2 on the spinner?
a)
1/2
b)
1/3
c)
1/8
d)
1/4
13.
To find the _________ you add up all the numbers and then divide by how many numbers you have.
a)
Mean
b)
Median
c)
Mode
d)
Range
14.
Find the median from the list of numbers:
60, 58, 52, 48, 60, 67
60, 58, 52, 48, 60, 67
a)
58
b)
59
c)
60
d)
118
15.
What is the mean of test scores?
{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}
{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}
a)
87
b)
85, 95, and 100
c)
30
d)
85 and 90
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