Calculate the mean deviation of the first five prime numb...
Calculate the mean deviation of the first five prime numbers.
2.72
5.6
5.25
13.6
Correct answer is A
The first five prime numbers are 2, 3, 5, 7 and 11
M.D = ∑(x−x̄)n
n = 5
x̄=∑xn=2+3+5+7+115=285=5.6
M.D = (2−5.6)+(3−5.6)+(5−5.6)+(7−5.6)+(11−5.6)5
= (−3.6)+(−2.6)+(−0.6)+(1.4)+(5.4)5=13.65
Take the absolute value of all numbers in bracket
= 3.6+2.6+0.6+1.4+5.45=13.65
∴
Solve the equation 4/a + 1/5a = 3 ...
Simplify \frac{x}{x + y} + \frac{y}{x - y} - \frac{x^2}{x^2 - y^2}...
If p varies inversely as the square of q and p=8 when q=4, find q...
If M represents the median and D the mode of the measurements 5, 9, 3, 5, 7, 5, 8 then (M, D) is...
If -8, m, n, 19 are in arithmetic progression, find (m, n)...
Simplify 2.04 × 3.7 (Leave your answer in 2 decimal place) ...