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The following table gives the number of dog bites reported to the police last year in six cities. Briefly explain the meaning of a member, a variable, a measurement, and a data set with reference to this table.

Explain the meaning of the following terms. a. Quantitative variable b. Qualitative variable c. Discrete variable d. Continuous variable e. Quantitative data f. Qualitative data

Indicate which of the following variables are quantitative and which are qualitative. a. Number of persons in a family b. Colors of cars c. Marital status of people d. Time to commute from home to work e. Number of errors in a person's credit report

Classify the following as cross-section or time-series data. a, Food bill of a family for each month of 2009 b. Number of armed robberies each year in Dallas from 1998 to 2009 c. Number of supermarkets in 40 cities on December 31, 2009 d. Gross sales of 200 ice cream parlors in July 2009

Eight randomly selected customers at a local grocery store spent the following amounts on groceries in a single visit: \(\$ 216, \$ 184, \$ 35, \$ 92, \$ 144, \$ 175, \$ 11\), and \(\$ 57\), respectively. Let \(y\) denote the amount spent on groceries in a single visit. Find: a. \(\Sigma y\) b. \((\Sigma y)^{2}\) c. \(\Sigma y^{2}\)

The number of students (rounded to the nearest thousand) currently enrolled at seven universities is \(7,39,21,16,3,43\), and 19, respectively. Let \(x\) be the number of students currently enrolled at a university. Find: a. \(\Sigma x\) b. \((\Sigma x)^{2}\) c. \(\Sigma x^{2}\)

Indicate whether each of the following examples refers to a population or to a sample. a. Salaries of CEOs of all companies in New York City b. Five hundred houses selected from a city c. Gross sales for 2009 of four fast-food chains d. Annual incomes of all 33 employees of a restaurant

State which of the following is an example of sampling with replacement and which is an example of sampling without replacement. a. Selecting 10 patients out of 100 to test a new drug b. Selecting one professor to be a member of the university senate and then selecting one professor from the same group to be a member of the curriculum committee