Find range, quartile deviation C.I. 25-30 30-35 35-40 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75-80 Frequency 1 1 8 2 2 1 4 2 0 3 4
Q: Find
|
C.I. |
25-30 |
30-35 |
35-40 |
40-45 |
45-50 |
50-55 |
55-60 |
60-65 |
65-70 |
70-75 |
75-80 |
|
Frequency |
1 |
1 |
8 |
2 |
2 |
1 |
4 |
2 |
0 |
3 |
4 |
Q: Find mean deviation and standard deviation
|
C.I. |
56 - 60 |
61 - 65 |
66 - 70 |
71 - 75 |
76 - 80 |
|
Frequency |
1 |
4 |
4 |
10 |
6 |
Q: Find coefficient of variation, coefficient of quartile deviation if
|
C.I. |
55 - 60 |
60 - 65 |
65 - 70 |
70 - 75 |
75 - 80 |
80 - 85 |
|
Frequency |
1 |
3 |
3 |
11 |
5 |
2 |
Q: Find coefficient of mean deviation and coefficient of range if
(a) 0, 2, 3, 6, 7, 8, 10, 14, 15, 24
(b) 0.7, 0.8, 1.4, 2.0, 3.5, 4.6, 8.1, 9.3
Q: The mean of the following distribution is 26. Find the value of p and also the value of the observation.
|
xi |
0 |
1 |
2 |
3 |
4 |
5 |
|
fi |
3 |
3 |
p |
7 |
p - 1 |
4 |
Also, find the
Q: Find
If
|
xi |
0 |
11 |
21 |
23 |
14 |
25 |
|
yi |
5 |
43 |
45 |
47 |
51 |
54 |
Q: The grades of a class of 9 students on a midterm report (x) and on the final examination (y) are as follows:
|
x |
77 50 71 72 81 94 96 99 67 |
|
y |
82 66 78 34 47 85 99 99 68 |
(a) Estimate the linear regression line.
(b) Estimate the final examination grade of a student
who received a grade of 85 on the midterm report
Q: The amounts of a chemical compound y that dissolved in 100 grams of water at various temperatures x were recorded as follows:
|
x (◦C) |
y (grams) |
|
0 |
8 |
(a) Find the equation of the regression line.
(b) Graph the line on a
(c) Estimate the amount of chemical that will dissolve in 100 grams of water at 50◦C.
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