Author: user
Quartile: Definition and Example
Definition of Quartile A quartile is a statistic describing how a set of data points are divided into 4 groups. Quartiles split a set of data by using 3 points: the lower quartile (Q1), the median (Q2), and the upper...
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Difference between Descriptive Statistics and Inferential Statistics
Descriptive statistics aim to summarize the characteristics of a given data set. In contrast, inferential statistics aim to use a sample of data to draw inferences about the whole population (i.e., hypothesis testing). Types of Descriptive Statistics 1. Measures of Central Tendency...
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Difference between Sample and Population
A population is the entire group of individuals about whom you want to draw conclusions. In contrast, a sample is the subset of the same entire group. Example 1 of sample and population You would like to study if students like...
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Calculate Population Variance in Excel
You can use the VARP, VAR.P, or VARPA functions in Excel to calculate population variance. Data Example The following is the data example for population variance. Example of VARP() Type =VARP(B2:B12) in a cell in Excel to calculate population variance. The population variance is 46.23. Example...
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Population Variance Formula and Calculation by Hand
This tutorial shows the formula for population variance and the steps for calculating population variance by hand. Formula Population variance is the measure of the variability of a population. The following is the formula for population variance. where, Population vs....
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Calculate Sample Variance in Excel
You can use the VAR, VAR.S or VARA functions to calculate sample variance. Data Example We are going to use the following sample of 6 students with math scores. The following is how the data looks in Excel. Example of Var() Thus, you can type...
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How to Calculate Mean in Excel
You can use the syntax of =AVERAGE() to calculate the mean in Excel. Example 1: one column You type the syntax of =AVERAGE(B2:B12) in one cell. Basically you can choose any cells to type that, and I just chose E2...
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rep() Function in R (4 Examples)
rep() is a built-in R function that replicates the values in the provided vector. This tutorial shows how to use rep() function in R with 4 examples. Example 1 The following code is to repeat the number 4 twice. Output: [1]...
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