What is a Z-score?
Finding Z-scores
Mean & Standard deviation
Positive and negative
word problems
100

Q: Definition of Z-Score 

Correct response: What is the standard deviation from mean 

100

Q: Mean 40 SD 5, x=50

• A: what is z=2

100

Q: Find mean concept

• A: what is the average of data

100

Q: Above mean sign

• A: what is a positive


100

Q: Test score 90 mean 80 SD 5

• A: what is a z=2



200

Q: Purpose of z-score

• A: What compares relative position

200

Q: Mean 100 SD 20, x=60

• A: what is z=-2

200

Q: What is SD

• A: what is a spread of data


200

Q: Below mean sign

• A: what is negative


200


Q: Height 150 mean 140 SD 10


• A: what is z=1

300

Q: Interpret z = -2

• A: what is 2 standard deviations below mean

300

Q: Mean 70 SD 10, x=75

• A: what is z=0.5

300

Q: Large SD means

• A: what are more spread out

300

Q: At mean z-score

• A: what is 0


300


Q: Grade 70 mean 75 SD 5


• A: what is z=-1


400

Q: Interpret z = 1.5

• A: what is 1.5 standard deviations above mean

400

Q: Mean 30 SD 6, x=18

• A: what is z=-2

400

Q: Small SD means

• A: what is closer data


400


Q: Furthest above mean


• A: what is largest positive Z 

400


Q: Basketball 30 mean 20 SD 5


• A= What is z=2



500

Q: Real world meaning

• A: what is Standardized comparison

500

Q: Mean 80 SD 8, x=96

•A: what is z=2

500


Q: Mean vs median



• A: what is center measure differences 



500

Q: Closest to mean

• A: what is z near 0



500


Q: Science score 85 mean 85 SD 10


• A: what is a z=0

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