Description
Please complete the following questions. It is important that you show all work you did to solve the problems when you submit your work. This includes any calculations, diagrams, or graphs that helped you solve it.
- OPEN ENDED Sketch a positively skewed graph. Describe a situation in which you would expect data to be distributed this way.
- Writing in Math Use the information on page 737 (attached below) to explain what statistics a teacher should tell the class after a test. Include the mean, median, and mode of the given data set and which measure of central tendency you think best represents the test scores and why. How will the measures of central tendency be affected if Mr. Dent adds 5 points to each score?
- Writing in Math Use the information on page 762(attached below) to explain how surveys are used in marketing. Find the margin of error for those who spend $249 or less if 807 mothers were surveyed. Explain what this margin of error means.
NOTE: PLEASE USE WORD DOCUMENT FORMAT PLEASE, AND TYPED
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Explanation & Answer
Attached.
Question 1:
Situation with can result in a positively skewed graph:
If a test conducted in a school has a high difficulty level, then most of the students will have a poor-toaverage performance in it. This bulk of students will form the maximum part of the distribution, towards
the left side of the positively skewed distribution curve.
Question 2
The scores are:
72
70
77
76
90...
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