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Changes to Mean and Standard Deviation

Authored by Anthony Clark

Mathematics

12th Grade

Changes to Mean and Standard Deviation
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11 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

_____ changes the measures of position and the measures of spread.

Rescaling

Shifting

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

To find the z-score we use:

Mean and IQR

Mean and Standard Deviation

Median and Standard Deviation

Median and IQR

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Z-scores tells us how many _________ a value is from the __________ and in which direction.

Means, Median

Medians, Standard Deviation

Standard Deviations, mean

Standard Deviations, median

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What percentages go in C and D?

13%

97%

15%

13.5%

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a crash test of 15 troopers, collision repair costs are found to have a distribution that is approximately normal, with a mean of $1800 and a standard deviation of $950. Construct a 99% confidence interval for the repair cost. 

(1070, 2530)

(1273, 2326)

(1799, 1801)

None of these.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The standard deviation should be interpreted as the typical distance of the values in a distribution from the mean.

True

False

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Without doing any calculations, which of the distributions shown (A, B, or C) has the largest standard deviation?

Distribution A

Distribution B

Distribution C

The standard deviations are equal because the ranges are equal.

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