Data Handling

Data Handling Worksheet-1

1. The arithmetic mean of first five natural numbers is

(a) 3                    (b) 4                    (c) 5                    (d) 6

2. If the arithmetic mean of 6, 8, 5, 7 x and 4 is 7, then x is

(a) 12                  (b) 6                    (c) 8                    (d) 4

Data Handling Worksheet-2

1. The mean of 10 observation is 25. If one observation, namely 25, it deleted, the new mean is

(a) 25                  (b) 20                 (c) 28                  (d) 22

2. Mean of a set of observations is the value which

(a) Occurs most frequently

(b) Divides observations into two equal parts

(c) Is a representative of whole group

(d) Is the sum of observations