Which of the following is the semi-interquartile range of a distribution?
Mode - Median
Highest score - Lowest score
1/2 (Upper Quartile - Median)
1/2 (Upper Quartile - Lower Quartile)
Correct answer is D
"Semi" means "half"
Interquartile range = Upper quartile - Lower quartile
| Semi | interquartile | range | = | 1
2 |
( | upper | quartile | - | lower | quartile | ) |
2x + 3y + 6 = 0
3x - 2y - 6 = 0
-3x 2y - 6 = 0
-2x + 3y - 6 = 0
Correct answer is D
Recall:
| x
a |
+ | y
b |
=1 |
Where 'a' and 'b' are the x and y intercept respectively.
| x
-3 |
+ | y
2 |
=1 |
2x-3y = -6
2x - 3y + 6 = 0 -------(1)
multiply through by -1
-2x + 3y - 6 = 0
Express \(\frac{4π}{2}\) radians in degrees.
288º
200º
144º
120º
Correct answer is C
\(\frac{4π}{2}\) = \(\frac{4}{5} * 180\)
= 144º
x = -3 or -5
x = -3 or 5
x = 3 or -5
x = 3 or 5
Correct answer is C
f:x → 2x\(^2\) + 3x -7 and
g:x →5x\(^2\) + 7x - 6
If 3f(x) = g(x)
3(2x\(^2\) + 3x -7) = 5x\(^2\) + 7x - 6
6x\(^2\) + 9x - 21 = 5x\(^2\) + 7x - 6
6x\(^2\) - 5x\(^2\) + 9x - 7x - 21 + 6
x\(^2\) + 2x - 15 = 0
x = 3 or -5
All strong wrestlers are weightlifters
Some strong wrestlers are not weightlifters
Some weak wrestlers are weightlifters
All weightlifters are wrestlers
Correct answer is B
No explanation has been provided for this answer.