The mean of the numbers 15, 21, 17, 26, 18, and 29 is 21....
The mean of the numbers 15, 21, 17, 26, 18, and 29 is 21. Calculate the standard deviation
9
6
5
0
Correct answer is C
|
x |
x - \(\overline{x}\))\(^2\) | (x - \(\overline{x}\))\(^2\) |
|
15 21 17 26 18 29 |
-6 0 -4 5 -3 -8 |
36 0 16 25 9 64 |
| \(\sum (x - \overline{x})^2\) = 150 |
Standard deviation = \(\sqrt{\frac{ \sum (x - \overline{x})^2}{n} }\)
= \(\frac{150}{6}\)
= \(\sqrt{25}\)
= 5
In the diagram, PQ/RT /RS/ =/QS/, ∠QST= 70° and ∠PQW = 55° Find the size of reflex ...
In the diagram, QR//ST, /PQ/ = /PR/ and < PST = 75o. Find the value of y...
The length, in cm, of the sides of a right angled triangle are x, (x+2) and (x+1) where x > 0. Fi...
Let a binary operation '*' be defined on a set A. The operation will be commutative if ...
Simplify: \(\frac{\log \sqrt{27}}{\log {81}}\)...
Find the standard deviation of 5, 4, 3, 2, 1 ...
What is the perpendicular distance of a point (2, 3) from the line 2x - 4y + 3 = 0?...