In a frequency distribution table, the Sigma X may be obtained by simply adding

Question

In a frequency distribution table, the Sigma X may be obtained by simply adding the values in the column labeled X _____. Bar graphs are used for data that are measured on a nominal or an ordinal scale _______. A sample of n = 6 scores has a mean of M = 20. The scores in the sample must sum to Sigma X = 120 _____. In the behavioral sciences the most commonly used measure of central tendency is the mean ________. The mean is often displaced toward the tail of a skewed distribution so that it is not a good representative measure of central tendency _________. A new score with a very extreme value is placed in a distribution. It will influence the semi-inter-quartile range less than it will the range ______. Attempt all questions in this section. Please show all working on the space provided for each question. The points for each question are indicated in hold face. For the following quiz scores, sketch a histogram of the frequency distribution. Make sure to clearly label both axes. 5, 2, 10, 9, 7, 6, 10, 7, 8, 5, 7, 8, 4, 10, 9, 5, 7, 7, 8, 5

Explanation / Answer

We are allowed to do 1 question at a time. Post again for second question.

5) Sum/n = Mean

So,

Sum/6 = 20

Sum = 20*6 = 120...True

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