WorksheetsAlgebra - Standard Deviation and z-score
Total questions: 26
Worksheet time: 2hrs 58mins
What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}
293.67
15.87
18
41.98
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?
The standard deviation for 4 data sets are shown. Which has all of the data points the same as the mean?
Set A σ = 4.3
Set B σ =2.7
Set C σ = 0
Set D σ = 6
A
B
C
D
Adam's Z-score on a test is +2.5. What does this mean?
He'd better start studying.
He did better than EVERYONE.
He scored 2.5 standard deviations above the average.
He scored 2.5 standard deviations below the average.
On a test Rico's test score had a z-score of 1.5. How did Rico do on the test in relation to the other test scores?
Average
Better than average
Worse than average
It was better than everyone else's.
If the mean of a data set is 35, which data element below will have a negative z-score?
50
44
35
33
(x5)4
A
B
C
D
