Given that the cumulative frequencies of less than type and more than type corresponding to a class interval are 320 and 323 respectively, when the total frequency is 500, find the percentage of the class-interval.

In a frequency distribution having 6 class intervals the total frequency is 100 and cumulative frequency less than type and cumulative frequency more than type corresponding to the fourth class interval are 86 and 50 respectively. Find the frequency of the fourth class interval.

Define frequency density of a class interval.

Make a cumulative frequency (less than type) table and draw a o give from the give data.

Make a cumulative frequency distribution (greater than type) table and draw an ogive.

The class-mark and class-length of a class-interval are 22 and 10 respectively.Find its lower and upper class-boundaries.

If the median of the given data is 32, then find the value of x and y when total frequency is 100.

The median of the following data is 525. Find the values of x and y , if the total frequency is 100. Here, CI stands for class interval and Fr for frequency.

Draw ogive (both ''less than'' and more than '' types) for the following distribution:

From the data given below, if the meadian is 32 find the value of f_1 and f_2 when total frequency is 100

The mid-value of a class-interval of a frequency distribution is 10 and the class-length of each class is 6, The lower class limit of the class-interval is