3010 BESC - Ch. 3 Quiz

In a negatively skewed distribution, which measure will generally have the highest value?

Mode

Which measure of central tendency works for nominal variables?

Mode

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+

Mode = 2

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

Neither the mean nor the median works for nominal variables.

What is the median for these data? 5, 1, 1, 3, 2

1 1 2 3 5 Median = 2

What is the mean for these data? 3, 1, 2, 5, 3, 4

1 2 3 3 4 5 mean = 3

What is the median for these data? 5, 1, 1, 3, 2

1, 1, 2, 3, 5, -> divide 5 by 2 = 3.5. Median = 2

What is the mean for these data? 3, 1, 2, 5, 3, 4

1, 2, 3, 3, 4, 5, Mean = 3 (because it is the most frequent seen #)

What is the median for these data? 3, 1, 2, 5+, 2, 4

1. order the numbers from least to greatest = 1, 2, 2, 3, 4, 5+ 2. 2 & 3 are the middle #'s so you divide these by 2 3. median = 2.5

What is the mode for these data? 3, 1, 2, 5+, 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+

2, the number that occurs the most in this set

What is the mean for these data? 4, 2, 3, 6, 4, 5

4

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+

4, there are 21 number all together you divide 21 by 2 10.5 count 10 in on each side until you find your middle number

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

Both ordinal and interval

In a positively skewed distribution, which measure will generally have the highest value?

Mean

Which measure of central tendency is MOST influenced by outliers?

Mean

What is the minimum level of measurement needed to calculate the mode?

Nominal

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

Ratio

In a negatively skewed distribution, which measure will generally have the highest value?

The Mode

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

The mean

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

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 _____.

bimodal

What is the mean for these data? 3, 1, 2, 5+, 2, 4

cannot be calculated

What is the minimum level of measurement needed to calculate the mean?

interval

Which measure of central tendency is MOST affected by outliers?

mean

The three most common measures of central tendency are:

mean, median, mode

Which measure of central tendency is most appropriate for skewed distributions?

median

Which of these measures is LEAST affected by outliers?

median

Which measure of central tendency is LEAST efficient?

mode

What is the minimum level of measurement needed to calculate the median?

ordinal

Which of the following is NOT a measure of central tendency?

standard deviation

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

the mean

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

unimodal.