Hypothesis Testing

How to Transform a set of raw scores into a set of z-scores

Jul 22, 2024
STATISTICS

To transform the set of raw scores into a set of z-scores in order, you will need to convert them...

3 min Read

Negative Z Score Table

Jul 22, 2024
STATISTICS

A negative Z score value indicates the raw score value is either left or below the mean of the standard...

4 min Read

One Sample Proportion z-test

Jul 22, 2024
STATISTICS

The one-sample proportion Z-test is a statistical tool used to conduct a hypothesis test about population proportions(p). It is used...

4 min Read

One Sample Z-Test in R

Jul 22, 2024
STATISTICS

The one-sample Z-test is a statistical hypothesis test used to determine whether the mean of a single sample is significantly...

4 min Read

Z Score Calculator – How to use Z-Score calculator

Jul 22, 2024
STATISTICS

Z score allows a comparison between two scores that are from different normal distributions of raw scores to standardized scores....

4 min Read

Z Score Table and Chart

Jul 22, 2024
STATISTICS

Z table or the Z-score table also called the standard normal table is a mathematical table used to find the...

9 min Read

Z-Score - Definition, Formula, and Calculation

Jul 22, 2024
STATISTICS

What is a Z-Score? Z-score is the distance of the raw score value from the mean in terms of standard...

6 min Read

Chi-square Test for variance

Feb 20, 2024
STATISTICS

Testing variance or standard deviation In this tutorial we will discuss a method for testing a claim made about the...

3 min Read

Chi-square Test for variance examples

Feb 20, 2024
STATISTICS

Chi-square Test for the Variance In this tutorial we will discuss a method for testing a claim made about the...

5 min Read

F test for two variances

Feb 20, 2024
STATISTICS

Testing equality of two variances Many times it is desirable to compare two variances rather than comparing two means. F...

3 min Read

F test for two variances examples

Feb 20, 2024
STATISTICS

F test for two variances In this tutorial we will discuss some examples on F test for comparing two variances...

6 min Read

paired t-test

Feb 20, 2024
STATISTICS

Paired $t$-test (Dependent Sample) Let $X_1, X_2, \cdots, X_n$ and $Y_1, Y_2, \cdots, Y_n$ be two dependent samples each of...

3 min Read