Interpret Standard Deviation
Authored by Anthony Clark
Mathematics
11th Grade
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17 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Joanne's score on a test gives her a Z-score is -1.50. What does this mean?
Joanne didn't take the test yet.
Joanne's test score is 1.50 standard deviations below the average test score.
Joanne did better than 1.50 times her peers.
Joanne's test score, on average, was 1.5 points lower than the other test scores.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A data point has a z-score of -2.50. How should be interpret this information?
This data point is 2.5 standard deviations above the mean
This data point is 2.5 standard deviations above the median
This data point is 2.5 standard deviations below the mean
This data point is 2.5 standard deviations below the median
Answer explanation
A z-score of -2.50 indicates that the data point is 2.5 standard deviations below the mean. This means it is significantly lower than the average value.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Use the image of the normal graph provided. What is the value of the standard deviation?
6
12
36
18
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
On average, a randomly selected baby's apgar score will differ from the mean 8.128 by about 1.4 units.
This represent what?
Interpret Standard deviation
Interpret r
Interpret r^2
Interpret LSRL "yhat"
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If two datasets have the same mean but different standard deviations, what does this tell us?
They have the same data points
They have data points spread out in the same way
One has data points more spread out than the other
They cannot be compared
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does standard deviation represent?
How many different variations are in the data set.
How the population varies compared to the sample.
How spread out each data value is from the mean.
How often the most popular choices in a sample were picked compared to the least popular choices
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When comparing data sets, a higher Standard Deviation indicates...
More consistency and less variability
Less consistency and less variability
More consistency and more variability
Less consistency and more variability
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