This document contains lecture slides about statistics for describing, exploring, and comparing data. It discusses measures of center such as the mean, median, and mode. It also discusses variance and standard deviation as measures of spread. Additional topics covered include finding the mode, determining if a value is unusually high or low based on the mean and standard deviation, calculating percentiles, and comparing the detail provided by different graphic displays of data.

1. Active Learning Lecture Slides For use with Classroom Response Systems Elementary Statistics Eleventh Edition and the Triola Statistics Series by Mario F. Triola Chapter 3: Statistics for Describing, Exploring, and Comparing Data

2. Which measure of center is the only one that can be used with data at the nominal level of measurement? Mean Median Mode

3. Which measure of center is the only one that can be used with data at the nominal level of measurement? Mean Median Mode

4. Which of the following measures of center is not affected by outliers? Mean Median Mode

5. Which of the following measures of center is not affected by outliers? Mean Median Mode

6. Find the mode for the given sample data. 79, 25, 79, 13, 25, 29, 56, 79 79 48.1 42.5 25

7. Find the mode for the given sample data. 79, 25, 79, 13, 25, 29, 56, 79 79 48.1 42.5 25

8. Which is not true about the variance? It is the square of the standard deviation. It is a measure of the spread of data. The units of the variance are different from the units of the original data set. It is not affected by outliers.

9. Which is not true about the variance? It is the square of the standard deviation. It is a measure of the spread of data. The units of the variance are different from the units of the original data set. It is not affected by outliers.

10. Weekly sales for a company are $10,000 with a standard deviation of $450. Sales for the past week were $9050. This is unusually high. unusually low. about right.

11. Weekly sales for a company are $10,000 with a standard deviation of $450. Sales for the past week were $9050. This is unusually high. unusually low. about right.

12. In a data set with a range of 55.1 to 102.8 and 300 observations, there are 207 data points with values less than 88.6. Find the percentile for 88.6. 32 116.03 69 670

13. In a data set with a range of 55.1 to 102.8 and 300 observations, there are 207 data points with values less than 88.6. Find the percentile for 88.6. 32 116.03 69 670

14. Which graphic display shows the least detailed information? Histogram Stem-and-leaf plot Boxplot

15. Which graphic display shows the least detailed information? Histogram Stem-and-leaf plot Boxplot