Deck 2: Means to an End: Computing and Understanding Averages

Question 1

If you know M = 5,and the sum of scores is 20,what is n?

A)4
B)0.25
C)100
D)need more information

Answer 1

4

Question 2

The mean can also be described as the ______.

A)common mean
B)arithmetic mean
C)mode
D)weighted mean

Answer 2

arithmetic mean

Question 3

Measures of central tendency can also be described as ______.

A)statistical measures
B)measures of variability
C)averages
D)deviation scores

Answer 3

averages

Question 4

What should be used to determine central tendency?

A)a correlation
B)a graph
C)the standard deviation
D)the average

Question 5

What is the formula for computing the mean?

A)ΣX + n
B)ΣY / X
C)ΣX / n
D)ΣN + y

Question 6

What is another term for the mean?

A)the midpoint
B)the frequency value
C)the arithmetic average
D)the distribution

Question 7

Which measure of central tendency is considered the most precise?

A)mean
B)median
C)mode
D)average

Question 8

______ consists of the middle point of a set of values.

A)Median
B)Mean
C)mode
D)Average

Question 9

If a distribution is "significantly distorted," what is this called?

A)variability
B)outliers
C)skew
D)percentile

Question 10

What is the Greek name for the letter Σ?

A)phi
B)rho
C)sigma
D)alpha

Question 11

Which of the following symbols represents sample size?

A)X
B)y
C)n
D)M

Question 12

What does the Σ symbol represent?

A)the mean
B)the sum of values
C)the sample size
D)an individual score

Question 13

The ______ is the value that best represents an entire group of scores.

A)mean
B)median
C)mode
D)average

Question 14

What is the most common average computed?

A)the mode
B)the mean
C)the variance
D)the median

Question 15

The measure of central tendency considered the least precise is the ______.

A)median
B)mode
C)mean
D)average

Question 16

The value most often used to represent an entire group of scores is the ______.

A)mode
B)N
C)median
D)mean

Question 17

What is the symbol used to represent the mean?

A)N
B)n
C)
D)X

Question 18

Which of the following symbols represents the individual score?

A)X
B)n
C)N
D)Σ

Question 19

All but which of the following are measures of central tendency?

A)median
B)mode
C)standard deviation
D)mean

Question 20

What does the symbol M represent?

A)mean
B)sample size
C)population size
D)individual score

Question 21

What is the mean value for the following scores: 10,35,40,60,55,25,50?

A)45
B)44.17
C)40
D)39.29

Question 22

What is the mode of the following data: 57 males and 43 females?

A)57
B)males
C)females
D)43

Question 23

Your current exam mean is 93.2.If you receive an 87 on the next exam,this will have the effect of ______.

A)increasing your mean
B)decreasing your mean
C)having no effect on your mean
D)cannot determine

Question 24

Which measure of central tendency is also known as the midpoint for a set of scores?

A)mode
B)mean
C)median
D)sum

Question 25

What is the mean value of the following scores: 117,132,147,156,196?

A)151.2
B)149.6
C)147.0
D)148.7

Question 26

Your current exam mean is 95.If you receive a 95 on the next exam,your mean ______.

A)will increase
B)will decrease
C)will remain the same
D)cannot be determined

Question 27

What is the mean value of the following scores: 1.11,1.17,1.15,2.02,2.07,3.11,2.14?

A)2.14
B)2.07
C)1.74
D)1.82

Question 28

The mode will always consist of the ______.

A)number of cases in the category
B)name of the category
C)format of the category
D)size of the category

Question 29

What is the median for the following amounts: $13,400;$17,560;$45,440;$68,550;$96,400?

A)$13,400
B)$48,240
C)$45,440
D)$96,400

Question 30

The measure of central tendency most influenced by outliers is the ______.

A)median
B)mode
C)mean
D)variance

Question 31

Which of the following best describes the mode?

A)sum of all values in a group
B)midpoint in a set of scores
C)number of subject collected
D)most frequently occurring value(s)

Question 32

What is the mode of the following data: 52 bowls of spaghetti,37 bowls of cereal,14 sandwiches,and 17 personal pizzas?

A)14
B)bowls of spaghetti
C)52
D)sandwiches

Question 33

Which of the following defines the median?

A)sum of all values in a group
B)most frequently occurring value
C)average variability in a set of scores
D)midpoint in a set of scores

Question 34

What is the median for the following amounts: $11.75,$12.75,$13.00,$10.75,$11.50,$10.50,$10.75?

A)$11.50
B)$11.75
C)$11.57
D)$11.00

Question 35

If ΣX = 4,390 and n = 4,what is M?

A)17,560
B)0.0100
C)1097.5
D)Need more information

Question 36

What does N represent?

A)sample size
B)population size
C)sum of scores
D)mean score

Question 37

What is the mode of the following data: 47 Republicans,49 Democrats,and 52 independents?

A)52
B)49
C)democrats
D)independents

Question 38

What is the mean value of the following scores: 12,25,15,27,32,8?

A)19.83
B)21.24
C)20.00
D)19.98

Question 39

Your current exam mean is 97.2.If you receive a 99 on the next exam,what will happen to your mean?

A)It has no effect.
B)It will decrease
C)It will increase.
D)It cannot be determined.

Question 40

What does n represent?

A)sample size
B)population size
C)sum of scores
D)mean score

Question 41

What is the median of the following set of scores: 23,17,15,32,38,47?

A)23
B)32
C)17.4
D)27.5

Question 42

What is the 25th percentile also known as?

A)Q1
B)Q2
C)Q3
D)Q4

Question 43

Which of the following are used to define the percentage of cases equal to and below a certain point in a distribution of scores?

A)T scores
B)Q points
C)standard scores
D)percentile points

Question 44

What would be your preferred measure of central tendency if you had the following data: $31,550;$33,750;$34,700;$37,550;$39,275?

A)median
B)mode
C)mean
D)average

Question 45

What is the preferred measure of central tendency using the following data: $32,400;$42,500;$47,250;$49,570;$145,850?

A)mean
B)median
C)mode
D)weighted mean

Question 46

Market researchers sent out a survey to college students in Ohio to assess their preferences regarding three different brands of honey.When examining the average preference of the respondents,which measure of central tendency is most likely to be used to describe them?

A)median
B)mean
C)mode
D)weighted mean

Question 47

Which of the following sets of data illustrates skew?

A)2,3,5,7,9
B)450,472,523,547,601
C)23,37,42,51,147
D)12,14,15,17,19

Question 48

A test score in the 47th percentile would be considered ______.

A)very high
B)very low
C)about average
D)cannot be determined

Question 49

What would be your preferred measure of central tendency if you had the following data: 57 males and 23 females?

A)median
B)weighted mean
C)mean
D)mode

Question 50

What impact do extreme scores have on the median?

A)a positive skew
B)a negative skew
C)minimal impact
D)nullifies the value

Question 51

A test score in the 3rd percentile would be considered ______.

A)very high
B)very low
C)about average
D)cannot be determined

Question 52

Regarding percentile points,what is the median also known as?

A)Q1
B)Q2
C)Q3
D)Q4

Question 53

What is the meaning of the term skew regarding a set of data?

A)It is significantly distorted.
B)It has been divided.
C)It has been added.
D)It is equalized.

Question 54

What is the 75th percentile also known as?

A)Q1
B)Q2
C)Q3
D)Q4

Question 55

What is the median of the following set of scores: 1.3,4.7,2.3,3.3,3.0,2.9?

A)2.95
B)3.05
C)2.90
D)3.00

Question 56

What is the preferred measure of central tendency using the following data: 23 Americans,57 Mexicans,and 14 Canadians?

A)mean
B)weighted mean
C)median
D)mode

Question 57

If you calculate the average of individual income and find no outliers,which measure of central tendency should you use?

A)mode
B)median
C)mean
D)other

Question 58

A test score in the 97th percentile would be considered ______.

A)very high
B)very low
C)about average
D)cannot be determined

Question 59

Which measure of central tendency is used when you calculate the average of individual income and find many extreme scores?

A)mean
B)median
C)mode
D)standard error

Question 60

When there is an even number of scores,how is the median calculated?

A)It is the average of the two middle scores.
B)Use the smaller of the two middle scores.
C)Use the larger of the two middle scores.
D)The median cannot be calculated in this situation.

Question 61

The nominal level can be the least precise level of measurement.

Question 62

When is the ordinal level of measurement the correct level of measurement to use?

Question 63

The ratio level is the least precise level of measurement.

Question 64

Nominal levels of measurements have categories that are not mutually exclusive.

Question 65

The interval level of measurement is based on some underlying continuum.

Question 66

When is the nominal level of measurement the correct level of measurement to use?

Question 67

When might the median be the more appropriate measure of central tendency over the mean?

Question 68

What does the term bimodal mean?

Question 69

The more precise scales contain all the qualities of the scales below them.

Question 70

How would you calculate the median when you have an even number of scores?

Question 71

What is the formula for calculating the mean? What does each of the symbols represent?

Question 72

The ratio level of measure does not have an absolute zero on the scale.

Question 73

The ordinal level of measurement stands for order.

Question 74

What is meant by the term outlier?

Question 75

Use the mode as a measure of central tendency when the data are qualitative in nature.

Question 76

Why is the mean the most frequently used measure of central tendency?

Question 77

While there are three measures of central tendency,the mean,median,and mode are all interchangeable anyway.

Question 78

When is the mode the best measure of central tendency to use?

Question 79

When is the ratio level of measurement the correct level of measurement to use?