Calculate the standard deviation of 30, 29, 25, 28, 32 an...
Calculate the standard deviation of 30, 29, 25, 28, 32 and 24.
2.0
2.8
3.0
3.2
Correct answer is B
x | x−μ | (x−μ)2 |
24 | -4 | 16 |
25 | -3 | 9 |
28 | 0 | 0 |
29 | 1 | 1 |
30 | 2 | 4 |
32 | 4 | 16 |
∑ = 168 | 46 |
μ=24+25+28+29+30+326=1688=28
S.D=√∑(x−μ)2n=√466
= √7.67≊
Solve, correct to three significant figures, (0.3)^x = (0,5)^8...
If f(x) = x^{2} and g(x) = \sin x, find g o f....
Find the values of x at the point of intersection of the curve y = x^{2} + 2x - 3 and the lines ...
If 36, p, \frac{9}{4}, q are consecutive terms of an exponential sequence (G.P.). Find the sum o...
Solve; \frac{P}{2} + \frac{k}{3} = 5 and 2p = k = 6 simultaneously...
Find the area between line y = x + 1 and the x-axis from x = -2 to x = 0. ...
What percentage increase in the radius of a sphere will cause its volume to increase by 45%? ...
Find the fourth term of the binomial expansion of (x - k)^{5} in descending powers of x....