The first quartile of the age of the faculty members at Wilm

The first quartile of the age of the faculty members at Wilmington State is

38.5 years.

Which of the following are measures of center? Select all that apply

IQR, variance, mean, mode, median, standard deviation

The standard deviation of the first set of values listed here is about 40. What is the standard deviation of the other set? Explain how this could be determined without doing any calculation.

12, 32, 48, 74, 97, 107, 117

20, 40, 56, 82, 105, 115, 125

The sum of a set of quiz scores is 750 and the mean is 75. How many values are there?

Solution

A)

The first quartile is the median of the lower half.

There are 18 terms, so the lower half is the first 9 terms. Hence, the median of that is the fifth term.

Thus,

Q1 = 39 [answer]

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B)

The MEAN, MODE, AND MEDIAN are measures of center.

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c)

The standard deviation of the first set of values listed here is about 40. What is the standard deviation of the other set? Explain how this could be determined without doing any calculation.

[Please attach the \"other set\" and please indicate what is the \"first set\", then please submit this as a separate question. Thatway we can continue helping you. Thanks!]

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c)

As

n = Sum / Mean

Then

n = 750/75 = 10 [ANSWER, 10 VALUES]