16
8
4
2
Correct answer is D
x∆y = \(\sqrt{x+y - \frac{xy}{4}}\)
4∆3 = \(\sqrt{4+3 - \frac{4*3}{4}}\)
= \(\sqrt{4+3-3}\)
= \(\sqrt{4}\)
= 2.
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 |
Find the modal class mark.
4.5
14.5
24.5
34.5
Correct answer is C
Modal class 20 - 29
Modal class mark = \(\frac{20+29}{2}\)
= \(\frac{49}{2}\)
= 24.5
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
Which of the following is an example of production overhead?
Discount allowed
Carried inwards
Factory rent
Carriage outwards
Depreciation of office equipment
Correct answer is C
No explanation has been provided for this answer.
Which of the following is a recurrent expenditure to a Local Government Council?
Building classroom
Sinking of wells
Purchase of drugs
Construction of markets
Purchase of hospital beds
Correct answer is C
No explanation has been provided for this answer.