NEW
Font size
S
M
L
XL
WorksheetsUnit 2 Probability & Statistics
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
What is the correct formula to find a z-score?
a)
z= (x - μ) \ (σ)
b)
z= (μ) \ (σ)
c)
z= (σ) \ (x - μ)
d)
z= (μ - x) \ (σ)
2.
What does μ mean?
a)
Standard Deviation
b)
Range
c)
Mean
d)
Mode
3.
A z-score cannot be negative.
a)
False
b)
True
4.
What does σ mean?
a)
Standard Deviation
b)
Range
c)
Mean
d)
Mode
5.
What kind of graph is this?
a)
bar graph
b)
line graph
c)
ogive
d)
relative frequency
6.
What happens when a z-score is positive?
a)
It is less than the mean
b)
It is greater than the mean
c)
It is the same
d)
It doesn't effect it
7.
What happens when a z-score is equal to zero?
a)
It is equal to the mean
b)
It is less than the mean
c)
It is greater than the mean
d)
It doesn't effect it
8.
If a z-score is negative it is less than the mean.
a)
True
b)
False
9.
What is the mode of the following numbers?
0.5, 3, 4, 21, 90, 0.5, 0.5, 90 0.5, 0.5, 6, 3, 6, 6, 4, 21, 21, 6, 6, 6, 21, 6, 6
0.5, 3, 4, 21, 90, 0.5, 0.5, 90 0.5, 0.5, 6, 3, 6, 6, 4, 21, 21, 6, 6, 6, 21, 6, 6
a)
0.5
b)
21
c)
6
d)
23
10.
Which is the correct way to write the second quartile?
a)
Q2
b)
2Q
c)
Q2
d)
Q2
11.
What is the second quartile?
a)
Mean
b)
Mode
c)
Median
d)
Maximum
12.
What does the interquartile range show?
a)
The spread of the middle part of the data
b)
Median of all the collected data
c)
Z-score
d)
Mode of the data
13.
What is the median of:
10, 33, 79.5 66, 69, 3, 79.5, 80, 3, 10
10, 33, 79.5 66, 69, 3, 79.5, 80, 3, 10
a)
43.3
b)
69
c)
33.4
d)
43
14.
Q2 is not the same thing as the median.
a)
true
b)
false
15.
Mean= ???
a)
η
b)
Σ
c)
μ
d)
σ
Reset
