Intro Standard Deviation

Intro Standard Deviation

11th Grade

15 Qs

quiz-placeholder

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Intro Standard Deviation

Intro Standard Deviation

Assessment

Quiz

Mathematics

11th Grade

Hard

Created by

Anthony Clark

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The speeds of cars on the highway have a mean of 95 km/h with a standard deviation of 5 km/h. What percentage of cars averaged less than 85 km/h?

.15%

2.35%

2.5%

18.5%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which distribution has the smallest standard deviation?

red

yellow

green

blue

they are all the same

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The z-score represents.....

the amount of standard deviations a data value is above or below the mean.

the percentile the data value is above or below the mean.

the amount of standard deviations a data value is above or below the median.

the percent the data value is above or below the mean.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Find the area of the shaded region. 

0.16

0.84

0.68

0.34

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Find the area of the shaded region. 

0.16

0.84

0.68

0.34

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What's the probability of the gray area? (Mean = 55, Standard dev = 2.5)

0.8185

0.8413

0.8641

0.8389

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The mean life of a tire is 30,000 km. The standard deviation is 2000 km.

Then, 68% of all tires will have a life between ___________ km and __________ km.

 28,000 km and 32,000 km.

24,000 km and 34,000 km.

26,000 km and 34,000 km.

27,000 km and 31,000 km.

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