Chapter 18.4: How to Calculate the Pearson Correlation Coefficient

[@elenaerozario9320]

these videos are honestly what's helping me get thru Alevel biology. I am so glad i found this channel

[@trinitypoh2352]

The denominator of the equation should be (n-1) sxsy not just n. I checked this years biology syllabus

[@Tolumak.]

Yes, you are correct, she must have made a mistake

[@alizakhalid472]

In your video for t-test you stated a different formula for standard deviation. It had only n in the denominator instead of n-1. Which one is the correct formula?

[@biowithdrdemi]

I'm not sure if the formula you're referring to but the t test formula does not have n-1

[@FatmaNadjahLManda]

What book are you using?

[@sumreenadina9363]

can we get this in paper 4 or does it only come in paper 5? ps thank you for your hard work!

[@biowithdrdemi]

You can get this in paper 4 and 5

[@kimberlygumbo7300]

how did you get 2.10 for the SD

[@biowithdrdemi]

Hi Kimberly, it was already calculated for the question

[@abenezer_z.k7900]

Where is cheaper 18.5

[@zaidpatel3782]

please do a video on std deviation