Quiz: Chapter 3 Week 2

What is the median for the following amounts: $13,000; $18,560; $86,400; $62,550; $43,340? $62,550 $18,560 $86,400 $43,340

$43,340

If ΣX = 4,390 and n = 4, what is the value of M? 17,560 not enough information to determine 0.0105 1,097.5

1,097.5

An example of skew is represented in which of the following sets of data? 250, 283, 300, 267, 289 3, 4, 6, 7, 9 12, 13, 15, 17, 19 19, 27, 32, 50, 147

19, 27, 32, 50, 147

What is the mean value of the following scores: 1.25, 1.83, 2.03, 2.52, 3.75, 2.12, 3.48? 2.52 2.12 3.48 2.43

2.43

You know M = 5, and the sum of scores is 20. What is n? 100 4 5 0.25

4

A test score in the 3rd percentile would be considered very high. True False

False

The least precise scales contain all the qualities of the scales below them. True False

False

If your current exam mean is 93.2 and you receive an 87 on the next exam, what effect will this have? It will increase your mean. More information is needed to determine. Your mean remains unchanged. It will decrease your mean.

It will decrease your mean.

With regard to percentile points, what is the median also known as? Q1 Q4 Q2 Q3

Q2

The mode should be used as a measure of central tendency when the data are qualitative in nature. True False

True

The nominal level of measurement is defined by categories. True False

True

The ratio level of measurement has an absolute zero on the scale. True False

True

A test score in the 47th percentile is considered ______. average low high undetermined

average

If your current exam mean is 95, and you receive a 95 on the next exam, how It cannot be determined. It is decreased. It is unchanged. It is increased.

it is unchanged

Which measure of central tendency should be used when you calculate the average of individual income and find many extreme scores? arithmetic mean mode median mean

median

Sample size is represented by which of the following? y X M n

n

What is the mode of the following data: 86 sophomores and 43 seniors? seniors 86 43 sophomores

sophomores

The measure of central tendency most influenced by outliers is ______. the mean the median the mode the variance

the mean

What value is most often used to represent an entire group of scores? the median the mode the mean N

the mean

What would be your preferred measure of central tendency if you had the following data: $21,550; $23,750; $24,700; $27,550; $29,275? the mean the median the standard deviation the mode

the mean

Which measure of central tendency is considered the most precise? the mode the median the mean the average

the mean

The least precise measure of central tendency is ______. the median the average the mode the mean

the mode

Which of the following is the best description of the mode? the sum of all scores the average of all scores the midpoint of all scores the most frequently occurring value

the most frequently occurring value

All of the following are measures of central tendency EXCEPT ______. the mode the standard deviation the mean the median

the standard deviation