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Z-Scores

Authored by Kiera Poplawski

Mathematics

9th - 12th Grade

CCSS covered

Used 35+ times

Z-Scores
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8 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the formula to find the z-score?

z=xμz=x-\mu

z=σxμz=\frac{\sigma-x}{\mu}

z=μxσz=\frac{\mu-x}{\sigma}

z=xμσz=\frac{x-\mu}{\sigma}

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The sign of the z-score indicates whether the location is above(positive) or below(negative) the mean.

True

False

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the z-score if the data point is below the mean by 2 standard deviations?

+2.00

-2.00

+1.25

-1.00

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the z-score if the data point is above the mean by 1/2 standard deviations?

-0.50

+1.00

+0.50

-1.00

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

z-scores are used to standardize data sets to make them comparable.

True

False

Tags

CCSS.HSS.ID.A.4

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The z-score for the mean of the data will always be zero.

True

False

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Find the Z-score.

Mean = 22

Standard Deviation: 3.1

x = 29

2.26

16.45

-2.26

1.26

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