3. Describing Data Numerically

Given the following sample of coating thickness measurements (in millimeters) for low-viscosity paint: $0.83$, $0.88$, $0.85$, $0.90$, $0.87$, $0.86$, $0.89$, what is the sample mean thickness as calculated using a graphing calculator (rounded to two decimal places)?

In the context of describing data numerically using a graphing calculator, the process of extracting portions of a data set that are relevant to the analysis is called:

Suppose you have entered a data set into your graphing calculator and want to determine how many data values fall within the range from $35$ to $95$, inclusive. Which calculator function or process would you most likely use to find this count?

Which of the following groups and summarizes data in a concise format of rows and columns?

Which one of the following is not an example of discrete data?

Suppose the numbers of hours worked per week by $400$ statistics students are entered into a graphing calculator. Which of the following statistics can be directly obtained from the calculator's $1-\mathrm{Var}\mathrm{Stats}$ function?

Descriptive statistics are generally used for which of the following? Select the best answer.

Which of the following best describes where the characteristics of data, such as $\mathrm{mean}$, $\mathrm{median}$, and $\mathrm{standard\; deviation}$, are typically found when using a graphing calculator?

Which of the following distributions is left skewed when displayed on a graphing calculator?

Given a data set, which function on a graphing calculator is typically used to compute the $\mathrm{mean}$ and $\mathrm{standard\; deviation}$ of the data?

In Exercises 1 and 2, use the following wait times (minutes) at 10:00 AM for the Tower of Terror ride at Disney World (from Data Set 33 “Disney World Wait Times” in Appendix B).

35 35 20 50 95 75 45 50 30 35 30 30

Tower of Terror Wait Times

a. Find Q1, Q2 and Q3.

A review of the height and weight of children around the world concluded that there are differences in the distributions of these variables across populations. Which of the following best describes how a graphing calculator can be used to numerically summarize such data?

Which type of quantitative data is typically obtained as a result of measuring a variable rather than counting?

Which of the following types of data can be measured quantitatively?

[DATA] Carpoolers The following data represent the percentage of workers who carpool to work for the 50 states plus Washington, D.C. Note: The minimum observation of 7.2% corresponds to Maine and the maximum observation of 16.4% corresponds to Hawaii.

a. Find the five-number summary. b. Construct a boxplot. c. Comment on the shape of the distribution.