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What is a Frequency Polygon – Definition and Examples

What is a Frequency Polygon – Definition and Example Another way to represent the same data set is by using a frequency polygon.The frequency polygon is a graph that displays the data by using lines that connect points plotted for the frequencies at the midpoints of the classes. The frequencies are represented by the heights […]

How to Write an Argumentative Essay: Examples & Tips

How to Write an Argumentative Essay: Examples & Tips Writing an argumentative essay involves presenting a well-supported argument in favor of a particular thesis statement. Whether you encounter this task in high school or at the university level, mastering the art of argumentation is crucial. This article provides a guide on how to write an […]

Confidence Intervals for the Mean When σ Is Known

Today I will teach you how to Calculate Confidence Intervals for the Mean When σ Is Known In order to compute the confidence interval for the mean when σ is known, there are two assumptions that must be met. Assumptions for Finding a Confidence Interval for a Mean When σ Is Known The sample is a random sample. […]

How to write a Synthesis Matrix in Literature Review

What is a synthesis matrix in Literature Review? A synthesis matrix is a table that can be used to organize research. When completed, it provides a visual representation of main ideas found in the literature and also shows where there is overlap in ideas between authors. A completed matrix will help to integrate all of […]

Difference between One-tailed and Two-tailed Tests

Today, i will teach you about the Difference between One-tailed and Two-tailed Tests When you conduct a test of statistical significance, whether it is from a correlation, an ANOVA, a regression or some other kind of test, you are given a p-value somewhere in the output.  If your test statistic is symmetrically distributed, you can […]

How to Interpret probability Value (P-value)

This video explains how to interpret probability Value, also kow an p-value NB: This video has been embeded under the persmission of Ron QS (Owner & Producer – Quantitative Specialists)

Understanding Type I and Type II errors

Type I and Type II errors signify the erroneous outcomes of statistical hypothesis tests. Type I error represents the incorrect rejection of a valid null hypothesis whereas Type II error represents the incorrect retention of an invalid null hypothesis. Null Hypothesis Null Hypothesis refers to a statement which nullifies the contrary with evidence. Consider the […]

T-Distribution Table

The critical values of t-distribution are calculated according to the probabilities of two alpha values and the degrees of freedom. The Alpha (a) values 0.05 one tailed and 0.1 two tailed are the two columns to be compared with the degrees of freedom in the row of the table. One Tail 0.05 0.025 0.01 0.005 […]

Linear regression using Minitab

Linear regression using Minitab Introduction Linear regression, also known as simple linear regression or bivariate linear regression, is used when we want to predict the value of a dependent variable based on the value of an independent variable. The dependent variable can also be referred to as the outcome, target or criterion variable, whilst the […]

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