Overlapping and Non Overlapping Classes

Q. When the upper limt of one class coincides with the lower limit of the next class. This type of distribution is called as __________

1. exclusive distribution
2. inclusive distribution
3. selective distribution
4. frequency distribution

Q.

If the class Mark in a frequency distribution are 19.5, 26.5, 33.5, 40.5, 47.5, 54.5, 61.5, then the class size of distribution is

Q. Let l be the lower class limit of a class-interval in a frequency distribution and m be the mid point of the class. Then, the upper class limit of the class is

(a) m+$\frac{l+m}{2}$

(b) l+$\frac{m+l}{2}$

(c) 2m − 1

(d) m − 2l

Q. When the upper limt of one class does not coincides with the lower limit of the next class. This type of distribution is called as ________

1. inclusive distribution
2. exclusive distribution
3. selective distribution
4. frequency distribution

Q.

If the classes in a grouped frequency distribution are not continuous, we can make them continuous by finding half of the difference between the upper limit of a class and the lower limit of the next class, and then adding the same to all the lower limits and subtracting it from all the upper limits in the distribution.

1. True
2. False

Q.

If the classes in a grouped frequency distribution are not continuous, we can make them continuous by finding half of the difference between the upper limit of a class and the lower limit of the next class, and then adding the same to all the lower limits and subtracting it from all the upper limits in the distribution.

1. True

2. False

Q.

The times (in seconds) taken by 150

athlete to run a 110 m hurdle race are tabulated below

$\begin{array}{ccccccc}\text{Class}& 13.8-14& 14-14.2& 14.2-14.4& 14.4-14.6& 14.6-14.8& 14.8-15\\ \text{Frequency}& 2& 4& 5& 71& 48& 20\end{array}$

The number of athletes who completed the race in less than 14.6 seconds is _______.

1. 82

Q.

If the classes in a grouped frequency distribution are not continuous, we can make them continuous by finding half of the difference between the upper limit of a class and the lower limit of the next class, and then adding the same to all the lower limits and subtracting it from all the upper limits in the distribution.

1. True

2. False

Q.

If the classes in a grouped frequency distribution are not continuous, we can make them continuous by finding half of the difference between the upper limit of a class and the lower limit of the next class, and then adding the same to all the lower limits and subtracting it from all the upper limits in the distribution.

1. True
2. False