Data available in an unorganized form is called __________ data

(a)

Grouped data

(b)

class interval

(c)

mode

(d)

raw data

Let m be the mid point and b be the upper limit of a class in a continuous frequency distribution. The lower limit of the class is _______.

(a)

2m - b

(b)

2m+b

(c)

m-b

(d)

m-2b.

Which one of the following is not a measure of central tendency?

(a)

Mean

(b)

Range

(c)

Median

(d)

Mode

The mean of a set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of discarded number is _______.

(a)

101

(b)

100

(c)

99

(d)

98

A particular observation which occurs maximum number of times in a given data is called its _______.

(a)

Frequency

(b)

range

(c)

mode

(d)

Median