The table below shows that employees in an office , sorted according to their age. Find the median:
Age | Number of workers |
25 - 30 | 4 |
30 - 35 | 7 |
35 - 40 | 8 |
40 - 45 | 10 |
45 - 50 | 9 |
50 -55 | 8 |
Total | 46 |
which of the following is the merits of arithmetic mean
The table classifies 40 persons who took a test according to the marks they scored: Calculate the mean marks scored.
Marks | Persons |
0 - 10 | 4 |
10 - 20 | 6 |
20 - 30 | 16 |
30 - 40 | 8 |
40 - 50 | 6 |
The table shows the number of workers of different categories in an office , grouped according to their daily wages. What is the mean daily wages?
Daily wages(Rs) | Number of workers |
675 | 8 |
730 | 4 |
755 | 4 |
780 | 3 |
840 | 1 |
The ratio of the area (in ) to circumference (in cm) of a circle is 35 : 4. Find the circumference of the circle?
The diagonal of a rhombus is 25% less than the other diagonal. The area of the rhombus is 24 cm2. What is the length of the side of the rhombus?
ABCD is a rectangle, where AB = 4 cm and AD = 2 cm. Two arcs are drawn of radius AD and BC respectively. What is the area of the shaded region?
A wheel covers a distance of 22 km. The radius of the wheel is meter. Find the number of revolutions taken by the wheel.
From a rectangular cardboard of squares of are cut from all four corners and the edges are folded to form a cuboid open at top. Find the volume of the cuboid.
A garden is in the shape of rectangle having width of 20 feet and length of 30 feet. If in the center of garden, circular plot of diameter 14 feet need to be made and other area need to be covered by plant, then find the cost of planting per ft2 if it is Rs. 20 per .
Given data consists of distinct values of xi occurring with frequencies fi. The mean value for the data is
xi 5 6 8 10 fi 8 10 10 12 | ||