Question

QUESTION 1

1. A researcher is studying the question of how much the average home in California cost last year. Identify the population.

   		all people in California
   		all houses in California
   		all people who moved to California last year
   		All houses purchased in California last year

15 points   

QUESTION 2

1. A surveyor asks people whether or not they support their senator's vote on a bill. Choose the type of data that is collected.

   		quantitative
   		qualitative
   		neither quantitative nor qualitative
   		Not enough information is given.

15 points   

QUESTION 3

1. Choose the method below that is likely to give the best sample for the following: The mayor wants to know whether people in his city support the construction of a new city hall.

   		Every 10th person who enters city hall on a certain day is surveyed.
   		A random selection of city workers is surveyed.
   		A random selection of people from each neighborhood is surveyed.
   		Every person in a local boutique on a certain day is surveyed.

15 points   

QUESTION 4

1. Classify the following sampling method: Every 7th customer entering a shopping mall is asked to select his/her favorite store.

   		quota sampling
   		stratified sampling
   		systematic sampling
   		simple random sampling

15 points   

QUESTION 5

1. In each case identify what type of data it is:
   (A) If we record the total number of cars sold in 2010 by each of 10 car salespeople;
   (B) If we record the total number of cars sold by a particular car salesperson in 2007, 2008, 2009 and 2010.

   		(A) time-series data; (B) cross-sectional data
   		(A) cross-sectional data; (B) time-series data
   		(A) discrete data; (B) time-series data
   		(A) cross-sectional data; (B) continuous data

15 points   

QUESTION 6

1. Statistics is the science of conducting studies to

   		solve a system of equations
   		hypothesize, experiment, and form conclusions
   		collect, organize, summarize, analyze, and draw conclusions from data
   		monitor, study, and report on a subject

15 points   

QUESTION 7

1. Which of the following is not an example of misuse of statistics?

   		Drinking protein shakes results in weight loss in some people.
   		Three out of four dentists recommend toothpaste B.
   		Naso Nasal Spray works three times faster than other nasal sprays.
   		Lossy Weight Loss Cookies have one-third the calories.

Answer 1

1. all houses in California ( because information about hosue is to be collected)

2. qualitative (because data type collected is non numerical in nature)

3.A random selection of people from each neighborhood is surveyed ( collects the opinion of people from all the neighborhood)

4. systematic sampling.

5.  discrete data; time-series data

6.collect, organize, summarize, analyze, and draw conclusions from data

7. Drinking protein shakes results in weight loss in some people.