Psy/315 Week 4
1.a．Mnually calculate the mean, median, and mode or modes for the following samples:
(i) 7, 4, 6, 2, 6, 7, 3, 5
(ii) 0, -3, 5, -2, -6, 4, 7, 9, 4, -3, 0, 2 b. The number of days for which each of 15 office workers of a firm was absent during a one-month period is as sfollows: 0, 1, 1, 3, 0, 0, 2, 5, 0, 1, 1, 2, 0, 1, 1
Calculate the interquartile range, variance and standard deviation of the number of days absent.
2. The number of hours a student spent studying for a statistics course over the past seven days was recorded as follows: 2, 5, 6, 1, 4, 0, 3 Calculate the range, ,and for these data. Express each answer in appropriate units.3，4.67，2.16
3. Consider the percent change in housing values over a five-year period for regions of the United States, as shown in the following table. Draw a box plot. …show more content…
regions.
Region Percent Change Region Percent Change
New England 54.5% West North Central 38.3%
Pacific 48.9 West South Central 29.5
Middle Atlantic 35.3 East North Central 32.0
South Atlantic 33.6 East South Central
(i) 7, 4, 6, 2, 6, 7, 3, 5
(ii) 0, -3, 5, -2, -6, 4, 7, 9, 4, -3, 0, 2 b. The number of days for which each of 15 office workers of a firm was absent during a one-month period is as sfollows: 0, 1, 1, 3, 0, 0, 2, 5, 0, 1, 1, 2, 0, 1, 1
Calculate the interquartile range, variance and standard deviation of the number of days absent.
2. The number of hours a student spent studying for a statistics course over the past seven days was recorded as follows: 2, 5, 6, 1, 4, 0, 3 Calculate the range, ,and for these data. Express each answer in appropriate units.3，4.67，2.16
3. Consider the percent change in housing values over a five-year period for regions of the United States, as shown in the following table. Draw a box plot. …show more content…
regions.
Region Percent Change Region Percent Change
New England 54.5% West North Central 38.3%
Pacific 48.9 West South Central 29.5
Middle Atlantic 35.3 East North Central 32.0
South Atlantic 33.6 East South Central