DEV Community

Nitin-bhatt46
Nitin-bhatt46

Posted on

"Day 42 of My Learning Journey: Setting Sail into Data Excellence! Today's Focus: Mathematics for Data Analysis (Stats Day -21)

STATISTICS FOR DATA ANALYTICS - 20

F Distribution.

When to use :- when we have to check if the means of two groups are significantly different from each other.

In probability theory and statistics , the F - distribution or F-ratio, also known as Snedecor’s F distribution or the Fisher-Snedecor distribution ( after Ronald Fisher and George W.Snedecor ) is a continuous probability distribution that arises frequently as the null distribution of a test statistic, mostly notably i the analysis of variance (ANOVA ) and other F-test.

Comparing the variance or Mean between two groups.

F distribution graphs are mostly Right skewed.

F - test ( Variance Ratio test )

VARIANCE = SQUARE OF STANDARD DEVIATION.

AFTER GETTING SAMPLE VARIANCE =

Step 2 :-

F VALUE = SAMPLE VARIANCE 1 / SAMPLE VARIANCE 2

STEP 3 :-

Decision Rule.

Degree of freedom for both the sample
Alpha value

Feel free to share this post to enhance awareness and understanding of these fundamental concepts in statistical analysis!

πŸ™ Thank you all for your time and support! πŸ™
Don't forget to catch me daily at 6:30 Pm (Monday to Friday)for the latest updates on my programming journey! Let's continue to learn, grow, and inspire together! πŸ’»βœ¨

Top comments (0)