The heights (in inches) for a sample of 20 male adults are 62, 82, 79, 76, 73, 70, 67, 64, 61, 80, 79, 73, 60, 60, 60, 71, 71, 74, 74, 74
Draw the frequency_polygon for these data using an initial class boundary of 59.5 and a class width of 5. Note that you can add or remove classes from the figure. Label each class with its midpoint.

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Let w=23 . what is the value of w + 45 ?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average