QNT 275 Week 2 Practice: Connect Knowledge Check

QNT 275 Week 2 Practice: Connect Knowledge Check 

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QNT 275 Week 2 Practice: Connect Knowledge Check

Complete the Week 2 Knowledge Check in Connect.

Note: You have unlimited attempts available to complete practice assignments.

1.

In a statistics class, 10 scores were randomly selected with the following results: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66.

What is the IQR?

11.00

10

5.00

5.25

12.00

2.

A quantity that measures the variation of a population or a sample relative to its mean is called the ____________.

range

interquartile range

standard deviation

coefficient of variation

variance

3.

An observation separated from the rest of the data is a(n) ___________.

absolute extreme

outlier

quartile

mode

4.

Quality control is an important issue at ACME Company, which manufactures light bulbs. To test the life-hours of their light bulbs, they randomly sampled nine light bulbs and measured how many hours they lasted: 378, 361, 350, 375, 200, 391, 375, 368, 321.

What is the mean?