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Calculators
Class Width Calculator (Step by Step)
The class width refers to the length of the class interval in a frequency distribution.
Given a large amount of data in raw form, it becomes important to partition the data into class intervals in...
Miscellaneous
What is Class Interval? (with Examples & Types)
We can find the class interval using the formula,
Class Interval = Upper Limit of Class - Lower Limit of Class.
We organize data in the form of class intervals in order to present the data...
Basics
How to Find Class Width (With Examples)
The class width for a set of data values can be calculated using the formula,
Class Width = (Highest Value - Lowest value)/Number of Classes.
The class width of a given frequency distribution refers to...
Miscellaneous
Advantages and Disadvantages of Mean in Statistics
The most popular and widely used measure of representing the entire data by one value is what most laymen call the "average" and what statisticians call the arithmetic mean.
Its value is obtained by...
Miscellaneous
How to Find the Expected Value of X^3 (with Examples)
The expected value of x3 can be calculated using the formula,
E(X3) = Σ x3 * p(x)
Here p(x) is the probability mass function for the discrete random variable X.The sum Σ x3p(x) is taken over...
Calculators
Residuals Calculator (with Examples)
The residuals calculator below will find the residual values on the basis of the values for the independent (X variable) and dependent (Y variable) variables entered.
We construct a linear regression model to predict...
Calculators
Sxx, Sxy, and Syy Calculator
The calculators below calculate the value of Sxx, Sxy, and Syy on the basis of the x data values and y data values entered. Simply enter the values of the x and y variables...
Miscellaneous
How to find Expected Value of X^2 (with Examples)
The expected value of x2 can be calculated using the formula,
E(X2) = Σ x2 * p(x).
Here p(x) is the probability mass function for the discrete random variable X.The sum Σ x2p(x) is taken over...
