Hypothesis Testing > F Test When is an F Test used? Several different tests are used in statistics, including the Z Test and the Chi-Square test. An F test is run in a very particular situation: when you want to…

# ANOVA Excel 2013 (One-Way ANOVA) Easy Steps and Video

Statistics Video Index > ANOVA Excel 2013 (One-Way) Watch the video or read the steps below: ANOVA Excel 2013 : Overview. With ANOVA (Analysis of Variance), you’re testing different groups to see if there’s a significant difference between them. For…

# Standardized Test Statistic: What is it?

Hypothesis Testing > What is a Standardized Test Statistic? Standardized Test Statistic Formula If you’re taking the AP Statistics test, you’ll need to know the general formula for a standardized test statistic. Standardized test statistics are used in hypothesis testing.…

# How to Calculate the Least Significant Difference (LSD)

Hypothesis Testing > How to Calculate the Least significant Difference Watch the video or read the steps below: How to Calculate the Least Significant Difference (LSD): Overview When you run an ANOVA (Analysis of Variance) test and get a significant…

# Degrees of Freedom: What are they?

Hypothesis Testing > Degrees of Freedom Degrees of freedom are used in hypothesis testing. Contents (click to skip to that section): What are Degrees of Freedom? DF: Two Samples Degrees of Freedom in ANOVA Why Do Critical Values Decrease While…

# Large Enough Sample Condition

Statistics Definitions > Large Enough Sample Condition The Large Enough Sample Condition tests whether you have a large enough sample size compared to the population. A general rule of thumb for the Large Enough Sample Condition is that n≥30, where…

# Sample Size in Statistics: How to Find it

Probability and Statistics > Sample Size Watch the video or read the article below: Links mentioned in the video: 95% CI Table calculator. What is “Sample Size”? A sample size is a part of the population chosen for a survey…

# What is an F Table used for in Statistics?

Statistics Definitions > What is an f table? What is an F Table? The F table is used in statistics to find critical F-values, called F statistics, in hypothesis testing. Like the normal distribution curve, the F-distribution has a total…

# How to Calculate Margin of Error in Easy Steps

Hypothesis Testing > How to Calculate Margin of Error Contents (click to skip to that section): What is a Margin of Error? How to Calculate Margin of Error (video) Margin of Error for a Proportion What is a Margin of…

# T-Score vs. Z-Score: What’s the Difference?

Hypothesis Testing > T-Score vs. Z-Score You may want to read these articles first: What is a t-statistic? What is a z-score? Watch the video or read the article below: T-Score vs. Z-Score: Overview A z-score and a t score…