Only physical copies of this homework will be accepted. Please don\'t email me y
ID: 3299546 • Letter: O
Question
Only physical copies of this homework will be accepted. Please don't email me your solution. If you need additional space for certain problem, write the problem number clearly on additional pages. Read Essentials of Statistics 2-1, 2-2, 2-3, 2-4 (5 th edition: p. 43 ~ 70) and answer the following questions: (a) What are five characteristics of data? (b) Is it possible to identify the original list of data from a frequency distribution? (c) In any relative frequency distribution, what must the sum of the percentages be equal to or be very close to? d) Describe the features of an approximately normal frequency distribution. (Relative Frequency Distribution) ln a Harris Interactive survey, 2303 adults were asked whether they believe in five different things, and the accompanying table summarizes the results. Does this table describe a relative frequency distribution? Why or why not? The accompanying frequency distribution summarizes the heights of a sample of people in Vassar Road Elementary School. What can you conclude about the people included in the sample? Particularly, how do you explain the gap?Explanation / Answer
2:
For a relative frequency distribution, sum of relative ferqeuncies must be equal to 100%. In the given distribution, sum of relative ferqeuncies is not equal to 100%. So it is not relative ferquency distribution.
3:
Distribution of height is skewed to right. Mostly students have height between 35 ft and 54 ft.
No one of the sampled student has height between 55ft and 64 ft.
Some students have height between 65 ft and 74 ft.
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