1. The following data give the hours spent studying per week by nine students. 12
16
7
22
11
18
7
25
16
Find the mean, median, and mode.
2. The following data give the number of patients admitted to a hospital on seven days during January 2003. 19 14 9 25 21 13 16 Find the mean and median. Do these data have a mode? 3. The following data give the hours spent studying per week by a sample of nine students. 12
16
7
22
11
18
7
25
16
Find the range, variance, and standard deviation. 4. Suppose the following data give the amount (in inches) of snowfall for 10 days during the months of January to March of 2004 for the state of Utah. 8
5
11
3
9
10
2
4
6
4
Find the range, variance, and standard deviation. 5.
The following table gives the frequency distribution of the values (in thousands of dollars) of cars owned by all 50 employees of a company. Value of Car ($000s) 0 to less than 10 10 to less than 20 20 to less than 30 30 to less than 40 40 to less than 50 Calculate the mean, variance, and standard deviation.
f 12 18 11 6 3