Hypothesis Testing: t-tests, z-tests, Chi-Square, ANOVA, Statistical Significance & P-values

Z-test for Proportion

Feb 9, 2026
STATISTICS

$Z$-Test for Proportion Let $X$ be the observed number of individuals possessing certain attributes (say, number of successes) in a...

3 min Read

Z-test for Proportion examples

Feb 9, 2026
STATISTICS

Z-Test for Proportion In this tutorial we will discuss some numerical examples on one sample Z test for testing population...

5 min Read

z-test for two means

Feb 9, 2026
STATISTICS

Two sample Z test for means In this tutorial we will discuss two sample Z test for testing the difference...

3 min Read

z-test for two means examples

Feb 9, 2026
STATISTICS

Two sample Z test for means In this tutorial we will discuss some numerical examples on two sample z test...

6 min Read

z-test for two proportions

Feb 9, 2026
STATISTICS

Two sample proportion test Suppose we want to compare two distinct populations $A$ and $B$ with respect to possessions of...

3 min Read

z-test for two proportions examples

Feb 9, 2026
STATISTICS

$Z$-Test for difference of Proportions In this tutorial we will discuss some numerical examples on two sample Z test for...

6 min Read

Calculate Z Score in Excel with Examples

Jul 22, 2024
STATISTICS

The function to calculate z-score in Excel is STANDARDIZE(). This function accepts input parameters like data set, mean, and standard...

5 min Read

Can Z Score be Negative

Jul 22, 2024
STATISTICS

Yes, Z-Score can be negative. The negative z score value represents the raw score value that is either left or...

2 min Read

Find Critical Value of Z

Jul 22, 2024
STATISTICS

In this article, we will discuss what is the critical value of z and when to use the critical value...

7 min Read

Find the Area between Two Negative Z Scores

Jul 22, 2024
STATISTICS

The area between two negative scores can be found by finding the area between two z-score and subtracting the small...

2 min Read

Find the Area between two z scores?

Jul 22, 2024
STATISTICS

In this article, we will discuss step by step guide on how to find the area between two z scores...

2 min Read

Find the area under Standard Normal Curve to the left of Z

Jul 22, 2024
STATISTICS

The normal distribution is a continuous probability distribution. The total area under the standard normal curve is always 1. The...

2 min Read