Find the standard deviation of the numbers 3,6,2,1,7 and ...
Find the standard deviation of the numbers 3,6,2,1,7 and 5.
2.00
2.16
2.50
2.56
Correct answer is B
| x | 3 | 6 | 2 | 1 | 7 | 5 | Total = 24 |
| x−ˉx | -1 | 2 | -2 | -3 | 3 | 1 | |
| (x−ˉx)2 | 1 | 4 | 4 | 9 | 9 | 1 | 28 |
ˉx=246=4
S.D=√∑(x−ˉx)2n
= √286=√4.667=2.16
If m and ( m + 4) are the roots of 4x2−4x−15=0, find the equation whose roots are 2 m and...
A stone is thrown vertically upward and distance, S metres after t seconds is given by S = 12t ...
Given \sin \theta = \frac{\sqrt{3}}{2}, 0° \leq \theta \leq 90°, find \(\tan 2\the...
A line passes through the origin and the point (1\frac{1}{4}, 2\frac{1}{2}), what is the gradien...
Given that y = x(x + 1)^{2}, calculate the maximum value of y....
In what interval is the function f : x -> 2x - x^2 increasing? ...
Find the constant term in the binomial expansion (2x^{2} + \frac{1}{x})^{9}...
If \alpha and \beta are the roots of x^{2} + x - 2 = 0, find the value of \(\frac{1}{\al...