Lia and Elise are discussing measures of spread. Elise says the best measure of spread with which to compare data is the IQR. Lia says the best measure of spread with which to compare data sets is the standard deviation. Complete the sentences. Elise is correct if both data sets are

large

normal

skewed

small

2such as

1, 2, 3, 4

1, 2, 4, 5, 20, 300

1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15

3Lia is correct if the data is

large

normal

skewed

small

4 such as
60, 65, 70, 75

0, 60, 70, 70, 250

0, 10, 20, 25, 55, 60, 390

The distributive property allows you to say that 3(x − 1) = 3x −

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%