"Equal width for different classes is preferred in construction fo frequency distribution" Explain.

How would you construct a frequency distribution of a continuous variable?

The relative humidity (in %) of a certain City for a September month of 30 days was as follows: (i) Construct a grouped frequency distribution table with classes 84-86, 86,-88 etc. (ii) What is the range of the data?

A company manufactures car batteries of particular type. The life (in years) of 40 batteries was recorded as follows: Construct a grouped frequency distribution table with exclusive classes for this data, using class intervals of size 0.5 starting from the interval 2-2.5.

The blood group of 36 students of IX class are recorded as follows Represent the data in the form of frequency distribution table. Which is the most common and which is the rarest blood group among these students?

Which measure of dispersion do you use for a frequency distribution with open-end class?

The electricity bills (in rupees) of 25 houses in a locality are given below. Construct a grouped frequency distribution table with a class size of 75. 170, 212, 252, 225, 310, 712, 412, 425, 322, 325, 192, 198, 230, 320, 412, 530, 602, 724, 370, 402, 317, 403, 405, 372, 413

Find the lower class-boundary of the continuous frequency distribution of which the mid-value is m and the upper class-boundary is u.

For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abscissae are the:

The mid-value of a class-interval of a continuous frequency distribution is 42 and its class-length is 10.Find the lower and upper class-limits of the class-intervals.