Solved: Why is variance as a measure of variability preferred to, Basic Statistics

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Why is variance as a measure of variability preferred to

Question: 1. Can variability be negative? Explain.

2. How many scores are included to compute the range?

3. What is the interquartile range?

4. Why is variance, as a measure of variability, preferred to the range, the IQR, and the SIQR?

5. Explain why deviations from the mean are squared in the formula for variance.

6. What does it mean to say that the sample variance is unbiased?

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