Respond to these questions in about 200 words.

2.1 What is statistics? 2.2 Measures of center. 2.3 Measures of spread. 2.4 Box plots. 2.5 Histograms.

A. My students created a survey which they personally handed to their respondents. These are the results of two students.

1. A student was trying to determine the average property value in a particular neighborhood. The survey asked randomly chosen respondents about their age, property value, and other personal information. No surveys were returned to the student.

2. A student was trying to determine her customer's satisfaction with sales and service. A survey asked her customers how satisfied they were with their capital equipment purchase and after-sales service. All the surveys were returned to the student.

Why was there such a disparity in respondent participation?

B. What is the difference between the mean and median? Would you use the mean or the median if the data were normally distributed (near bell-shaped)? Explain.

C. What is the difference between the standard deviation and interquartile range (IQR)? Would you use the standard deviation or IQR if measuring significantly skewed data? Explain.

D. How can you identify an outlier? Why are outliers a problem in statistical analysis?

E. Please briefly describe when you have personally used (or found in the zyBooks) central tendency and dispersion to summarize data in your workplace, community, or home. Describe the data's shape and the measures used. Based on this week's lesson, do you believe the proper measures were used?