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 | ) |
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
Consider the following statement:
x: All wrestlers are strong
y: Some wresters are not weightlifters.
Which of the following is a valid conclusion?
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.