Question

Topic: Measure of Central Te
4. For the following frequency distribution, determine
(a) The median class.
(b) The number of the item that represents the median.
(c) The width of the equal steps in the median class.
(d) The estimated value of the median for these data.
Class
Frequency
Class
Frequency
100-149.5
12
300-349.5
72
150-199.5
350-399.5
63
200-249.3
27
400_449.5
36
250-299.5
58
450-499.3
18​

Answer 1

Answer:

number line among negative integers, 0 and positive integers.

   

    So, case 1: When a is any negative integer, that is, -a,

    then (−1) × (-a) = a

    So, case 2: When a is 0,

    then (−1) × 0 = 0

    So, case 3: When a is any positive integer, that is, a,

    then (−1) × a = -a

    Thus, the possible answers are a, 0 and -a.

(ii) (a) 

(b) −37×(−1)=37-37×-1=37

(c)