Levels Tought:
Elementary,High School,College,University,PHD
Teaching Since: | May 2017 |
Last Sign in: | 262 Weeks Ago, 1 Day Ago |
Questions Answered: | 20103 |
Tutorials Posted: | 20155 |
MBA, PHD
Phoniex
Jul-2007 - Jun-2012
Corportae Manager
ChevronTexaco Corporation
Feb-2009 - Nov-2016
Question description
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2. Categorize each technique described below as simple random sampling, stratified sampling, systematic sampling, cluster sampling, or convenience sampling.
3. Which technique for gathering data (observational study or experiment) do you think was used in the following studies?
4. Is college worth the expense? To answer this question, many different subjects are asked their average annual income. The average annual incomes (in thousands of dollars) from the sample are as follows: 18.3 if the students dropped out of high school, 32.5 for high school graduates, 49.5 for those with bachelor's degrees, 72.3 for those with master's, and 86.2 for those with doctoral degrees. Make a bar graph showing average annual income for each education level.
5. Below are the points scored by a college football team out of a sample of fourteen games played that season:
31 |
13 |
45 |
41 |
27 |
18 |
48 |
52 |
13 |
31 |
24 |
51 |
30 |
26 |
6. In your chemistry class, suppose your final grade is based on a lab score, two major test scores, and a final exam score. There are 100 points available for each score. However, the lab score is worth 20% of your total grade, each major test is worth 25%, and the final exam is worth 30%. Compute the weighted average for the following scores: 91 on the lab, 83 on the first major test, 88 on the second major test, and 86 on the final exam.
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