Boundaries and Class Length

Q. Choose the correct option for the statements given below :-

a) Limits and boundaries are same in case of exclusive class intervals.

b) Limits and boundaries are same in case of inclusive class intervals.

c) Limits and boundaries are different in case of inclusive class intervals.

d) Limits and boundaries are different in case of exclusive class intervals.

1. (b) and (d)
2. (a) and (c)
3. (d) only
4. (a) and (b)

Q. Upper boundary of class of data grouped by inclusive class intervals is :-

1. average of upper limit of previous class and lower limit of current class
2. average of lower limit of previous class and lower limit of current class
3. average of lower limit of previous class and upper limit of current class
4. average of upper limit of previous class and upper limit of current class

Q. Lower boundary of class of grouped data is ________.

1. average of lower limit of previous class and upper limit of current class
2. average of upper limit of previous class and upper limit of current class
3. average of lower limit of previous class and lower limit of current clas
4. average of upper limit of previous class and lower limit of current class

Q. Boundaries with the inclusive class interval are shown in the table below.

Limits	Boundaries
10.5 -14.5	10 - 15
?	15 - 20
20.5 - 24.5	20 - 25

What is the class interval of Group 2?

1. 14.5 - 19.5
2. 14.5 - 18.5
3. 15.5 - 19.5
4. 16.5 - 19.5

Q.

What is the value of 3 ¹

Q. Limits and boundaries of the respective class intervals are represented by the variables a, b, c, d, e, f, g and h in the table given below.

Class interval	Lower limit	Upper limit	Lower Boundary	Upper Boundary
0-10	a	b	c	d
10-20	e	f	g	h

What is the sum of a, b, c, d, e, f, g and h?

1. 40
2. 80
3. 0
4. 160

Q. The value of log of b to the base a=3/2 and the value of log of d to the base c=5/4. If a, b, c, d are positive integers and a-c=9, find the value of b-d.

Q. Exclusive class intervals with respective boundaries are shown in the table below.

Limits	Boundaries
0 - 25	a - b
25 - 50	c - d

What is the sum of a, b, c and d?

1. 25
2. 50
3. 100
4. 75

Q. In grouped frequency distribution table limits and boundaries are same in the case of .

1. Inclusive class
2. Exclusive class
3. Unordered Class
4. Random Class

Q. Upper boundary of first class of data grouped by inclusive class intervals is :-

1. average of upper limit of first class and lower limit of second class
2. average of lower limit of first class and upper limit of second class
3. average of lower limit of first class and lower limit of second class
4. average of upper limit of first class and upper limit of second class

Q. 66 23+32÷ 23-32

Q. Inclusive class intervals with respective boundaries are shown in the table below.

Limits	Boundaries
11-15	a-b
16-20	c-d

What is the sum of a, b, c and d?

1. 63
2. 31
3. 62
4. 72

Q. Average of the upper limit of a class and lower limit of the next class is called __________.

1. lower boundary of the first class
2. upper boundary of the first class
3. class interval
4. upper boundary of the next class

Q. Limits and boundaries are not equal in case of __________.

1. exclusive class intervals
2. continous grouped frequency distribution
3. inclusive class intervals
4. unorganised data

Q. Difference between upper boundaries and lower bounderies of a class is called _______.

1. frequency
2. class length
3. organising difference
4. cumulative frequency