The following table gives the number of branches and number of plants in the garden of a school. No. of branches `(x)` : 2 3 4 5 6 No. of plants `(f)` : 49 43 57 38 13 Calculate the average number of branches per plant.

The following table gives the number of children of 150 families in a village No. of children (x) : 0 1 2 3 4 5 No. of families (f) : 10 21 55 42 15 7 Find the average number of children per family.

The following table gives the number of children of 150 families in a village No. of children (x) : 0 1 2 3 4 5 No. of families (f) : 10 21 55 42 15 7 Find the average number of children per family.

Find the mean number of plants per house from the following data :

The following table shows frequency distribution of the number of saplings planted by the students of a school : Find the modal number of saplings planted.

The number of telephone calls received at an exchange per interval for 250 successive one-minute intervals are given in the following frequency table: No. of calls (x) : 9 1 2 3 4 5 6 No. of intervals (f) : 15 24 29 46 54 43 39 Compute the mean number of calls per interval.

The number of telephone calls received at an exchange per interval for 250 successive one-minute intervals are given in the following frequency table: No. of calls (x) : 9 1 2 3 4 5 6 No. of intervals (f) : 15 24 29 46 54 43 39 Compute the mean number of calls per interval.

Give the chromosome numbers of the following animals and plants.

Direction: Read the following table carefully and answer the questions given below: The given table shows the number of boys and girls in 5 different school: Find the ratio between the average number of girls in school B and D together and the average number of boys in school B and C together.

The number of chromosomes in leaf tip cell of plant is 6. The number of choromosoms in each of the 4 cells of its pollen tetrad would be

The number of chromosomes in leaf tip cell of plant is 6. The number of choromosoms in each of the 4 cells of its pollen tetrad would be