251, 249, 254, 227, 243, 118, 154

38 people donated to an organisation working for differently abled persons. The amount in rupees were as follows:101 500 401 201 301 160 210 125 175 190 450 151 101 351 251 451 151 260 360 410 150 125 161 195 351 170 225 260 290 310 360 425 420 100 105 170 250 100 (i) By taking classes 100-149, 150-199, 200-249...prepare grouped frequency distribution table.

Find: 754 - 54 + 154 - 254

The lengths of 40 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the following table : {:("Length (in mm) ","Number of leaves "),(" "118-126," "3),(" "127-135," "5),(" "136-144," "9),(" "145-153," "12),(" "154-162," "5),(" "163-171," "4),(" "172-180," "2):} Find the median length of the leaves.

The lengths of 40 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the following table: Length (mm): 118-126 127-135 136-144 145-153 154-162 163-171 172-180 No. of leaves: 3 5 9 12 5 4 2. Find the mean length of leaf.

The lengths of 40 leaves of a plant are measured correct to the nearest millimetre, and the data obtained is represented in the following table: Length (in mm): 118-126 127-135 136-144 145-153 154-162 163-171 172-180 No. of leaves: 3 5 9 12 5 4 2 Find the mean length of leaf.