Random sampling from four normally distributed populations produced the following data: (You may find it useful to reference the E table.) A -10 -15 -18 Treatments B -17 -13 -12 Grand mean SSTR MSTR -6 -13 -4 -10 -15 Picture Click here for the Excel Data Eile a. Calculate the grand mean. (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.) -12 b. Calculate SSTR and MSTR. (Round final answers to 4 decimal places.)

Find the mean, median, and mode(s) of the data in the following stem-and-leaf plot. The leaf represents the ones digit. 2 1 46 Part 1 of 3 Find the mean. Round your answer to one decimal place, if necessary. Mean: X Part 2 of 3 Find the median. Round your answer to one decimal place, if necessary. Median: S Part 3 of 3 Find the mode(s). If there is more than one, separate them with commas. O There is no mode. O There is at least one mode. 00.... Mode(s): 4799 X Ś Español

Approximate the mean for the following data set. Round your answer to one decimal place. \table[[Class,, Frequency ],[0-13,,4],[14-27,, 14], [28-41,, 7], [42-55, 10,], [56-69 The mean is approximately

What is the best description of the shape of the data below?       Bell-shaped     Skewed right     Skewed left