Lissed 1) You have the following data: 12.4, 21.6, 13.8, 19.1, 17.2 Calculate the following: 3)...

 

 

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Lissed 1) You have the following data: 12.4, 21.6, 13.8, 19.1, 17.2 Calculate the following: 3) b) n yi c) (y-y) i=1 i=1 n d) (y,-y) i=1 2) Suppose we have the following measurements for the numbers of red blood cells (RBC's) in 5 men (measured in millions of RBC's per l): 4.9 6.2 6.0 5.2 5.7 a) Calculate the sample mean. b) Calculate the sample median. 3) Refer to problem 2. Suppose we add another man with a RBC count of 1.0. a) Calculate the sample mean of this new sample. b) Calculate the sample median of this new sample. c) Which statistic (mean or median) do you think better represents this new sample of 6 men? Why? 4) Make up a sample of size n = 5 for which the average is -8 (note the (-) sign). Not all 5 numbers should be identical. 5) Here are the weights of 7 female leopards (in kg): 38.2 42.1 48.1 32.2 45.0 47.9 46.2 a) Calculate the sample mean and the sample median b) Calculate the Sum of Squares (SS) c) Calculate the sample variance (s) d) Calculate the sample standard deviation (s) e) Calculate the average absolute deviation ) Subtract 6 from each of the numbers in problem 5 (i.e., you now have 32.2, 36.1, 42.1 ... etc.). a) Calculate the sample variance (s) b) Are you surprised by the results? Why or why not? c) What happens to the mean? (You don't need to do the actual calculation unless you're not sure what's going on). d) What happens to the median? (Again, you don't need to do the calculation unless you're not sure what's happening) Lissed 1) You have the following data: 12.4, 21.6, 13.8, 19.1, 17.2 Calculate the following: 3) b) n yi c) (y-y) i=1 i=1 n d) (y,-y) i=1 2) Suppose we have the following measurements for the numbers of red blood cells (RBC's) in 5 men (measured in millions of RBC's per l): 4.9 6.2 6.0 5.2 5.7 a) Calculate the sample mean. b) Calculate the sample median. 3) Refer to problem 2. Suppose we add another man with a RBC count of 1.0. a) Calculate the sample mean of this new sample. b) Calculate the sample median of this new sample. c) Which statistic (mean or median) do you think better represents this new sample of 6 men? Why? 4) Make up a sample of size n = 5 for which the average is -8 (note the (-) sign). Not all 5 numbers should be identical. 5) Here are the weights of 7 female leopards (in kg): 38.2 42.1 48.1 32.2 45.0 47.9 46.2 a) Calculate the sample mean and the sample median b) Calculate the Sum of Squares (SS) c) Calculate the sample variance (s) d) Calculate the sample standard deviation (s) e) Calculate the average absolute deviation ) Subtract 6 from each of the numbers in problem 5 (i.e., you now have 32.2, 36.1, 42.1 ... etc.). a) Calculate the sample variance (s) b) Are you surprised by the results? Why or why not? c) What happens to the mean? (You don't need to do the actual calculation unless you're not sure what's going on). d) What happens to the median? (Again, you don't need to do the calculation unless you're not sure what's happening)