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Preview questions
1. What is the mean of the following data: 2, 4, 6, 8?
4 · 5 · 6 · 7
2. Which measure of central tendency is affected by extreme values?
Mean · Median · Mode · Range
3. What is the median of the data set: 3, 1, 4, 2, 5?
2 · 3 · 4 · 5
4. In a frequency distribution, what does the class interval represent?
The range of values · The total number of observations · The average value · The mode of the data
5. Which of the following is not a measure of central tendency?
Mean · Median · Mode · Variance
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