1. Find the mean for the data items in the given frequency distribution. (Round to 3 decimal places as needed.)
Score, x: 1, 2, 3, 4, 5, 6, 7, 8
Frequency, f: 2, 4, 1, 6, 3, 4, 2, 1
2. Find the mean for the data items in the given frequency distribution. (Round to 3 decimal places as needed.)
Score, x: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Frequency, f: 1, 3, 2, 5, 6, 5, 8, 5, 4, 3
3. Find the grade point average. Assume that the grade point values are 4.00 for an A, 3.00 for a B, and so on. (Round to 3 decimal places as needed.)
Grades # credit hours
B 3
B 4
B 4
C 4
4. The mean number of hours that Raphael worked over the past four weeks is 36.25. If he works 41 hours this week, what will the mean number of hours be that he will have worked over the five-week period? (Round to two decimals.)
5. Find the median for the data items in the given frequency distribution. (Round to the nearest tenth as needed.)
Score, x: 1, 2, 3, 4, 5, 6, 7, 8
Frequency, f: 5, 2, 3, 3, 2, 5, 1, 1
6. Find the mode(s) for the following group of data items.
6.7, 8.9, 10.1, 7.8, 9.3, 9.3, 8.3, 9.8, 8.7, 7.6, 7.6
7. Find the mode(s) for the data items in the given frequency distribution.
Score, x: 1, 2, 3, 4, 5, 6, 7, 8
Frequency, f: 1, 2, ,2, 1, 4, 5, 1, 7
8. Find the mode for the data items in the given frequency distribution.
Score, x: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Frequency, f: 2, 2, 2, 5, 9, 6, 7, 4, 6, 3
9. Find the mean, median, and mode for the following frequency distribution. Round the mean to two decimal places as needed.
x f
3 3
4 9
5 5
6 1
7 8
9 5
10 3
10. The number of miles per gallon (MPG) for 62foreign cars is given in the following frequency table. Find the mean, median, and mode for these data. Round the mean to the nearest hundredth as needed.
MPG: 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30
Frequency: 3, 6, 4, 4, 5, 7, 8, 8, 3, 5, 7, 2