The formula to determine the number of classes given by Sturge’s Rule is which one of the following ? 2) K= (log N) 1.322 3)K = $\frac{1+3.322} {(log N)} $ 4) K = $\frac{3.322}{(log N) + 1} $ Where :
1) K = 1+ 3.322 (log N)
K = Number of classes
N = Total number of observations
$\log N$ = Logarithm of the total number of observations
Sturge's Rule Formula for Number of Classes
Sturge's Rule provides a guideline for determining the optimal number of classes ($K$) for a frequency distribution based on the total number of observations ($N$).
The correct formula, as given in the options and widely accepted, is:
$ K = 1 + 3.322 \log_{10} N $
Where:
- $K$ represents the number of classes.
- $N$ is the total number of observations.
- $\log_{10} N$ is the logarithm base 10 of the total number of observations.
This formula helps ensure that the data is grouped effectively without being too broad or too fragmented.
Important Questions from Classification of Data
A set of annual numerical data, comparable over the years, is given for the last 12 years.
Consider the following statements:
1. The data is best represented by a broken line graph, each corner (turning point) representing the data of one year.
2. Such a graph depicts the chronological change and also enables one to make a short-term forecast.
Which of the above statements is/are correct?Consider the following statements:
Statement 1: Range is not a good measure of dispersion.
Statement 2: Range is highly affected by the existence of extreme values.
Which one of the following is correct in respect of the above statements?
Data can be represented in which of the following forms?
1. Textual form
2. Tabula form
3. Graphical form
Select the correct answer using the code given below.Which statement of the following is incorrect?
When the collected data is grouped with reference to time, we have
