PY 211 Test 2 Chapter 4

median

Alison received a score of 480 on the verbal portion of her SAT. If she scored at the 50th percentile, her score represents the ________ of the distribution of all verbal SAT scores.

All of the above

For the data set { 1,3,3,5,5,5,7,7,9}, the value "5" is

4.5

For the following data set {1,7,9,15,33,76,103,118}, what is the median location?

The mean is 9

For the following data set {1,9,9,9,11,28}, which of the following is false?

5

For the following set of data { 5,,9,5,5,2,4}, the mean is

3

Given the numbers 6,7,9,11,15,71,86, how many numbers fall below the median?

mean

If a physics professor gave her class the same exam every year, which of the following measures of exam scores would probably stay the most consistent in value from year to year?

mode

If a store manager wanted to stock the men's clothing department with shirts fitting the most men, which measure of central tendency of men's shirt sizes should be employed?

The range

If we were interested in studying salaries in the National Basketball Association, the least useful measure of the typical salary would be

median

In using ordinal data, which measure of central tendency is probably least useful?

You want to report the average weight of airline passengers so that the pilot can estimate the weight of the plane

In which of the following situations would you be most likely to use the mean as a measure of central tendency?

mode

On a histogram, which always refers to the highest point on the distribution?

The mean number of drinks consumed by males was disproportionately increased by outliers drinking lots of drinks.

Professor Neuberg found that the mean number of alcoholic drinks consumed at a party was much higher for males than for females. If the median and mode number of drinks consumed by males and females was both zero, how can the difference in means be explained?

both a and b ( will show the most common voices were 0 and will tell us nothing about the voices)

Suppose a sample of children reported how many voices they heard in their heads on a particular day, and that hearing voices was a relatively uncommon experience. In this case the mode

depends on the data and the question you want to ask

The best measure of central tendency

it is not disproportionately affected by extreme scores

The chief advantage of the median is that

it is less stable than the mean from sample to sample

The chief disadvantage of the median, when compared to the mean, is that

mean

The measure of central tendency that is most useful in estimating population characteristics because it is less variable from sample to sample is the

It is not much affected by extreme scores

The median has at least one advantage over the mean in that

(N+1)/2

The median location is defined as

the position, in an ordered series, occupied by the median

The median location is..

9

The mode of the number 1,3,4,5,6,6,7,8,9,9,9 is

The mean

The most commonly used measure of central tendency is

The mode

We are most likely to randomly pick which score from an actual data set?

mean, median and mode

When the distribution is symmetric and unimodal, which of the following are always equal?

mean and median

When the distribution is symmetric, which of the following are always equal?

we are assuming the distance between 4 and 6 is the same as the distance between 6 and 8

When we make implicit assumptions about a scale having interval properties,

mean

Which of the following can be defined algebraically?

It is least stable from sample to sample

Which of the following is NOT a disadvantage of the mean?

mean?

Which of the following is probably the most useful in studies in which extreme scores sometimes occur but have no real practical significance?

It is the 50th percentile

Which of the following is true about the value "9" in the following data set {1,1,1,7,9,12,15,65,100}?

mode

Which of the following is useful with data collected with nominal scales?

mean

Which of the following measures of central tendency is potentially misleading if the data are collected on an ordinal scale?

It can be calculated algebraically

Which of the following statement about the mode is false?

the mean

X with a line on top is the symbol for what?