Which of the following is a way to determine the size of the class interval:a. s = r/(1+3.3 log n) b. s = r+1/(3.3 log n)...

In business studies, analysis of data is something that is
essential to identify trends and determine what would be the right decisions to take.
The goal is always increase the ratio of returns versus the
risk.

Analysis of data starts with collection of data. The
data is then classified to make it easier to study it. Later mathematical techniques
like regression, correlation, etc., can be used to find trends. And the data can also be
presented in a meaningful manner using graphs and
charts.

When data is divided into classes, the number of
classes should be at least 5 and should not exceed 20. Each class should be unique so
that a data point lies in only one them.

If the highest
value in the data points is H and the lowest is L, R= H - L. The number of classes is
given by the formula K = 1 + 3.3 log n where n is the total number of data
points.

The size of the class interval is R /
(1 + 3.3 log n).