Statistics CH 3

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+ - 3 - 2 - Cannot be determined - 7+

2

What is the median for these data? 3, 1, 2, 5+, 2, 4 - cannot be calculated - 2.5 - 3 - 6

2.5

What is the mean for these data? 3, 1, 2, 5, 3, 4 - 6 - 3.5 - cannot be calculated - 3

3

What is the mean for these data? 4, 2, 3, 6, 4, 5 - 4.5 - Cannot be calculated - 5 - 4

4

Which of these measures is MOST affected by outliers? - They are all affected identically - The mode - The mean - The median

The mean

Which of the following measures of central tendency can be used with data on the ratio level of measurement? - The mean or the mode - The mode only - The mean only - Neither the mean nor the mode

The mean or the mode

Which measure of central tendency is MOST affected by outliers? - all are the same - mean - mode - median

mean

Which measure of central tendency is MOST influenced by outliers? - mode - mean - all are the same - median

mean

In a negatively skewed distribution, which measure will generally have the highest value? - all are the same - median - mode - mean

mode

Which of the following is NOT a measure of central tendency? -mode - median -mean -standard deviation

standard deviation

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+ -7+ -Cannot be determined - 2 - 4

4

For which levels of measurement can you calculate the mode? - Interval only - Neither ordinal nor interval - Ordinal only - Both ordinal and interval

Both ordinal and interval

Which measure of central tendency works for nominal variables? -No measures work for nominal variables -Median -Mode -Mean

Mode

Which measure of central tendency is always influenced by outliers? - The median - The mean - The mode - They are all affected identically

The mean

When a histogram or polygon chart for a quantitative variable has two distinct peaks, then the distribution is referred to as _____. -unimodal -symmetrical -bimodal -dichotomous

bimodal

In a positively skewed distribution, which measure will generally have the highest value? - mode - all are the same - median - mean

mean

What is the minimum level of measurement needed to calculate the mode? - nominal - interval - ratio - ordinal

nominal

What is the minimum level of measurement needed to calculate the median? -ratio -nominal - interval - ordinal

ordinal

What is the mode for these data? 3, 1, 2, 5+, 2, 4 - 2.5 - 2 - 6 - Cannot be calculated

2

Which measure of central tendency is most appropriate for skewed distributions? -Median -No measure is appropriate -Mean -Mode

Median

Which of these measures of central tendency works for nominal variables? - The mean - Both the mean and the median work for nominal variables. - Neither the mean nor the median works for nominal variables. - The median

Neither the mean nor the median works for nominal variables.

What is the highest level of measurement? - Ratio - Interval - Ordinal - Nominal

Ratio

What is the mean for these data? 3, 1, 2, 5+, 2, 4 - 3 - 6 - 2.5 - cannot be calculated

cannot be calculated

Question 2 1 / 1 pts What is the minimum level of measurement needed to calculate the mean? - ordinal - nominal - interval - ratio

interval

The three most common measures of central tendency are: - variance, standard deviation, IQR -mean, median, mode - inferential, descriptive, explanatory - nominal, ordinal, ratio

mean, median, mode

Which of these measures is LEAST affected by outliers? -median -mean -standard deviation -geometric mean

median

Which measure of central tendency is LEAST efficient? - mode -all are the same -mean -median

mode

What is the median for these data? 5, 1, 1, 3, 2 -cannot be calculated -1 -2 -2.4

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+ -7+ -Cannot be determined -4 -2

2

When a histogram for a quantitative variable has only one distinct peak, then the distribution is referred to as... - unimodal. - symmetrical. - normal. - ideal.

unimodal