Statistics- summarizing data

1 (a ) The sample mean is 16 .665 (b ) the sample median is 14 .5 , and (c the sample standard deviation is 6 .73 (d ) The median is a better measure of the data , because it is most similar to the largest amount of measurements . In the frequency histogram , the range of times 12-14 .9 seconds has the greatest frequency , and also includes the median 14 .5 but not the mean 16 .665 (f ) For men only , the mean is 13 .01 , the median is 13 .25 , and the standard deviation is 2 .70

. For women only , the mean is 20 .32 , the median is 19 .35 , and the standard deviation is 7 .65

2 (a ) The mean number of cigarettes smoked daily is 15 .6 (b ) the standard deviation is 10 .48 (c ) the range is 5-40 , and (d ) the median is 12 cigarettes

3 (a ) The mean number of hours of exercise is 3 .27 (b ) the median is 3 (c ) the standard deviation is 2 .24 , and the range of hours is 0-7

4 . The difference between the multiplication principle and permutations /combinations is that in a permutation and combination , you cannot have a repeated selection of the same thing (a ) 364 1 ,679 ,616 passwords (b (36 (4 !32 58 ,905 passwords

5 (a ) 60 ? 1 60 different ways (b ) 603 216 ,000 different ways (c ) 60 (60-3 205 ,320 different ways

6 (a ) 1 way (b ) 30 (5 !25 142 ,506 different ways (c ) 5...