Week 1 - Preactice Quiz

# Week 1 - Preactice Quiz - A difference between calculating...

This preview shows pages 1–5. Sign up to view the full content.

A difference between calculating the sample mean and the population mean is A. Only in the symbols, we u B. We divide the sum of the observations by n - 1 instead of n. C. The observations are ranked and select the middle value for the population mean. D. There are no differences. The correct answer is a. (n-1) occurs in the sample standard deviation and answer c is describing the calculation of the median.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2. Which of the following measures of location is affected most by extreme values? A. B. Mean C. Mode D. Geometric mean The correct answer is b. An extreme value changes the sum or total drastically and, hence, the mean. 3. Which level of measurement is required for the median? A. B. Ordinal C. Interval D. Ratio The correct answer is b. The data must be ranked or ordered to find the mean.
4. Which level of measurement is required for the mode? A. B. Ordinal C. Interval D. Ratio The correct answer is a. You can find a mode for any level of data. 5. In a set of observations, which measure of central tendency reports the value that occurs most often? A. B. Median C. Mode D. Geometric mean The correct answer is c. That's the definition of the mode.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
6. The weighted mean is a special case of the A. B.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

Week 1 - Preactice Quiz - A difference between calculating...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online