Chapter 3 - Central Tendency
What is the median for the following data set? 1 2 2 2 2 2 3 3 3 3 4 4 4 5 5 5 5 6 6 7 7+ a) 7+ b) 4 c) 2 d) Cannot be determined
B) 4
What is the median for these data? 5, 1, 1, 3, 2 a) 2 b) cannot be calculated c) 1 d) 2.4
a) 2
What is the mode for these data? 3, 1, 2, 5+, 2, 4 a) 2 b) 2.5 c) Cannot be calculated d) 6
a) 2
What is the median for these data? 3, 1, 2, 5+, 2, 4 a) 2.5 b) 6 c) 3 d) cannot be calculated
a) 2.5
For which levels of measurement can you calculate the mode? a) Both ordinal and interval b) Ordinal only c) Neither ordinal nor interval d) Interval only
a) Both ordinal and interval
What is the highest level of measurement? a) Ratio b) Ordinal c) Interval d) Nominal
a) Ratio
Which measure of central tendency is MOST influenced by outliers? a) mean b) median c) mode d) all are the same
a) mean
What is the minimum level of measurement needed to calculate the median? a) ordinal b) interval c) ratio d) nominal
a) ordinal
Which measure of central tendency is most appropriate for skewed distributions? a) No measure is appropriate b) Median c) Mean d) Mode
b) Median
Which of these measures is LEAST affected by outliers? a) mean b) median c) geometric mean d) standard deviation
b) Median
Which measure of central tendency works for nominal variables? a) Mean b) Mode c) No measures work for nominal variables d) Median
b) Mode
Which of these measures of central tendency works for nominal variables? a) Both the mean and the median work for nominal variables. b) Neither the mean nor the median works for nominal variables. c) The mean d) The median
b) Neither the mean nor the median works for nominal variables.
Which measure of central tendency is always influenced by outliers? a) The mode b)The mean c) They are all affected identically d) The median
b) The mean
Which of these measures is MOST affected by outliers? a) They are all affected identically b) The mean c) The mode d) The median
b) The mean
Which of the following measures of central tendency can be used with data on the ratio level of measurement? a) Neither the mean nor the mode b) The mean or the mode c) The mean only d) The mode only
b) The mean or the mode
When a histogram or polygon chart for a quantitative variable has two distinct peaks, then the distribution is referred to as _____. a) dichotomous b) bimodal c) unimodal d) symmetrical
b) bimodal
What is the minimum level of measurement needed to calculate the mean? a) ratio b) interval c) ordinal d) nominal
b) interval
In a negatively skewed distribution, which measure will generally have the highest value? a) all are the same b) mode c) mean d) median
b) mode
What is the minimum level of measurement needed to calculate the mode? a) ordinal b) nominal c) ratio d) interval
b) nominal
Which of the following is NOT a measure of central tendency? a) mean b) standard deviation c) median d) mode
b) standard deviation
When a histogram for a quantitative variable has only one distinct peak, then the distribution is referred to as... a) symmetrical. b) unimodal. c) ideal. d) normal.
b) unimodal
What is the mode for the following data set? 1 2 2 2 2 2 3 3 3 3 4 4 4 5 5 5 5 6 6 7 7+ a) Cannot be determined b) 7+ c) 2 d) 3
c) 2
What is the mode for the following data set? 1 2 2 2 2 2 3 3 3 3 4 4 4 5 5 5 5 6 6 7 7+ a) Cannot be determined b) 7+ c) 2 d) 4
c) 2
In a positively skewed distribution, which measure will generally have the highest value? a) all are the same b) median c) mean d) mode
c) mean
Which measure of central tendency is MOST affected by outliers? a) mode b) all are the same c) mean d) median
c) mean
The three most common measures of central tendency are: a) nominal, ordinal, ratio b) inferential, descriptive, explanatory c) mean, median, mode d) variance, standard deviation, IQR
c) mean, median, mode
What is the mean for these data? 3, 1, 2, 5, 3, 4 a) 6 b) 3.5 c) cannot be calculated d) 3
d) 3
What is the mean for these data? 4, 2, 3, 6, 4, 5 a) Cannot be calculated b) 5 c) 4.5 d) 4
d) 4
What is the mean for these data? 3, 1, 2, 5+, 2, 4 a) 6 b) 2.5 c) 3 d) cannot be calculated
d) cannot be calculated
Which measure of central tendency is LEAST efficient? a) all are the same b) median c) mean d) mode
d) mode