Chapters
Exercise 1
Calculate the mean for the following set of numbers: 5, 3, 6, 5, 4, 5, 2, 8, 6, 5, 4, 8, 3, 4, 5, 4, 8, 2, 5, 4.
Exercise 2
Find the mean for the following set of numbers:
3, 5, 2, 6, 5, 9, 5, 2, 8, 6.
Exercise 3
Find the mean for the following series:
3, 5, 2, 7, 6, 4, 9.
3, 5, 2, 7, 6, 4, 9, 1.
Exercise 4
Given the statistical distribution of the table.
xi | 61 | 64 | 67 | 70 | 73 |
fi | 5 | 18 | 42 | 27 | 8 |
Calculate the mean.
Exercise 5
A statistical distribution is given by the following table:
[10, 15) | [15, 20) | [20, 25) | [25, 30) | [30, 35) | |
fi | 3 | 5 | 7 | 4 | 2 |
Calculate the mean.
Exercise 6
Given the statistical distribution:
[0, 5) | [5, 10) | [10, 15) | [15, 20) | [20, 25) | [25, ∞) | |
fi | 3 | 5 | 7 | 8 | 2 | 6 |
Calculate the mean.
Solution of exercise 1
Calculate the mean for the following set of numbers: 5, 3, 6, 5, 4, 5, 2, 8, 6, 5, 4, 8, 3, 4, 5, 4, 8, 2, 5, 4.
xi | fi | xi · fi |
2 | 2 | 4 |
3 | 2 | 6 |
4 | 5 | 20 |
5 | 6 | 30 |
6 | 2 | 12 |
8 | 3 | 24 |
20 | 96 |
Mean
Solution of exercise 2
Find the mean for the following set of numbers:
3, 5, 2, 6, 5, 9, 5, 2, 8, 6.
2, 2, 3, 5, 5, 5, 6, 6, 8, 9.
Mean
Solution of exercise 3
Find the mean for the series:
3, 5, 2, 7, 6, 4, 9.
Mean
3, 5, 2, 7, 6, 4, 9, 1.
Mean
Solution of exercise 4
Given the statistical distribution of the table.
xi | 61 | 64 | 67 | 70 | 73 |
fi | 5 | 18 | 42 | 27 | 8 |
Calculate the mean.
xi | fi | xi · fi |
61 | 5 | 305 |
64 | 18 | 1152 |
67 | 42 | 2814 |
71 | 27 | 1890 |
73 | 8 | 584 |
100 | 6745 |
Mean
Solution of exercise 5
A statistical distribution is given by the following table:
[10, 15) | [15, 20) | [20, 25) | [25, 30) | [30, 35) | |
fi | 3 | 5 | 7 | 4 | 2 |
Calculate the mean:
xi | fi | xi · fi | |
[10, 15) | 12.5 | 3 | 37.5 |
[15, 20) | 17.5 | 5 | 87.5 |
[20, 25) | 22.5 | 7 | 157.5 |
[25, 30) | 27.5 | 4 | 110 |
[30, 35) | 32.5 | 2 | 65 |
21 | 457.5 |
Mean
Solution of exercise 6
Given the statistical distribution:
[0, 5) | [5, 10) | [10, 15) | [15, 20) | [20, 25) | [25, ∞) | |
fi | 3 | 5 | 7 | 8 | 2 | 6 |
Calculate the mean
xi | fi | xi · fi | |
[10, 15) | 12.5 | 3 | 37.5 |
[15, 20) | 17.5 | 5 | 87.5 |
[20, 25) | 22.5 | 7 | 157.5 |
[25, 30) | 27.5 | 4 | 110 |
[30, 35) | 32.5 | 2 | 65 |
21 | 457.5 |
Mean
The mean cannot be calcuated, because the class mark of the last interval cannot be found.
Using facebook account,conduct a survey on the number of sport related activities your friends are involvedin.construct a probability distribution andbcompute the mean variance and standard deviation.indicate the number of your friends you surveyed
this page has a lot of advantage, those student who are going to be statitian
I’m a junior high school,500 students were randomly selected.240 liked ice cream,200 liked milk tea and 180 liked both ice cream and milktea
A box of Ping pong balls has many different colors in it. There is a 22% chance of getting a blue colored ball. What is the probability that exactly 6 balls are blue out of 15?
Where is the answer??
A box of Ping pong balls has many different colors in it. There is a 22% chance of getting a blue colored ball. What is the probability that exactly 6 balls are blue out of 15?
ere is a 60% chance that a final years student would throw a party before leaving school ,taken over 50 student from a total of 150 .calculate for the mean and the variance
There are 4 white balls and 30 blue balls in the basket. If you draw 7 balls from the basket without replacement, what is the probability that exactly 4 of the balls are white?