The table shows the distribution of marks obtained by som...
The table shows the distribution of marks obtained by some students in a test
Marks | 0-9 | 10-19 | 20-29 | 30-39 | 40-49 |
Frequency | 4 | 12 | 16 | 6 | 2 |
What is the upper class boundary of the upper quartile class?
49.5
39.5
29.5
19.5
Correct answer is C
£f = 4 + 12 + 16 + 6 +2 = 40
Upper quartile class
= 3/4 of 40 = 30th position
Counting from the distribution table to the 30th position,
the upper class boundary is 29.5
If 3xC2=15, find the value of x?...
Given that 2x=0.125, find the value of x....
Find the angle between (5i+3j) and (3i−5j)...
For what values of m is 9y2+my+4 a perfect square?...
The distance(s) in metres covered by a particle in motion at any time, t seconds, is given by S...
If f(x)=mx2−6x−3 and f′(1)=12, find the value of the constant m....
The length of the line joining points (x,4) and (-x,3) is 7 units. Find the value of x. ...