1.What is a quantitative measure of variability? 2. Describe how the range and standard deviation uniquely...

1.What is a quantitative measure of variability?

2. Describe how the range and standard deviation uniquely identifies the variability of a distribution.

3. How does the presence of one or more outliers influence the range and standard deviation?

4. Create a collection of 7-12 numbers of your choice (e.g., 4, 9, 13, 2, 7, 8, 6, 10). Find the following quantitative measures of variability:

Range
Sample Variance
Sample Standard Deviation

Show all work. Make sure that the numbers that you choose are different from the numbers chosen from your fellow classmates.

5. Why is the standard deviation a better measure of variation than the range?

Expert Solution

orchestra answered 2 years ago

2. Discuss why the range is an unstable measure of variability and when the interquartile range...

2. Discuss why the range is an unstable measure of variability and when the interquartile range may be preferred if the distribution of a variable is skewed?

Discuss the advantages and disadvantages for the interquartile range and standard deviation in describing the variability...

Discuss the advantages and disadvantages for the interquartile range and standard deviation in describing the variability present in a distribution of scores.

which of the following is NOT a measure of dispersion? standard deviation mode range variance

1. The sample range is useful as a measure of: variability association skewness bias central tendency...

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Describe the relation between scales of measurement and measures of variability (e.g., interquartile range and standard...

Describe the relation between scales of measurement and measures of variability (e.g., interquartile range and standard deviation.)

1 - What is the range, expected rate of return, variance, and standard deviation of the...

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1. Define variability. 2. What are the strengths and limitations of the range? 3. When computing...

1. Define variability. 2. What are the strengths and limitations of the range? 3. When computing a standard deviation, why are the deviations from the mean squared? 4. Why is the square root taken when computing the standard deviation? 5. What are the three measures of variability? Which is the most commonly used? 6. Compute the range of the following student’s test scores: 39, 64.5, 54, 49, 56, 61, 58 7. The local B League baseball team is trying out...

The standard deviation alone does not measure relative variation. For example, a standard deviation of $1...

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Select all of the true statements about the standard deviation of a quantitative variable. 1.The standard...

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Define standard deviation, index of dispersion, and range.

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