Variance and Standard Deviation - Year 1 Statistics

[@Red-xz6hy]

Alongside the visual aid, this is perhaps one of the best explanations i've seen for measures of spread.

[@Niro-n8x]

Really helpful, keep it up!

[@TulayDoganli]

How do you get the frequency collumn when you used the calculator method to find the standard deviation etc in a grouped frequency table? I only get the x collumn.

[@1stClassMaths]

Seems like you skipped the central tendency video. I explained in that one at 15:50: kzbin.info/www/bejne/bHewkKyZhL-picUsi=pfrvYTVqWpzopiHS&t=950

[@PrableenKaur-c8c]

Please make a video on logarithms or mechanics ❤

[@Kimoisawesome]

POV: me in grade 8 looking at this 👁️👄👁️ thinking that I am smart and want to learn new information

[@s.m.3584]

How would you calculate the grouped frequency for sample standard deviation, I do OCR MEI and we have to use the divisor of (n-1) ?

[@1stClassMaths]

Hi. I don't cover the differences between OCR, just AQA and Edexcel but from what I read OCR would use the denominator n - 1. AQA/Edexcel don't make this distinction between sample and population.

[@yaseenelhosseiny]

Are you doing pure/mechanics year 1 or statistics year 2 after you finish statistics year 1?

[@1stClassMaths]

Undecided. Probably stats year 2. What do you wish to see?

[@yaseenelhosseiny]

@@1stClassMaths Thanks for the response. I think it should be totally up to you to decide🙂

[@ramratan8426]

@@1stClassMaths if you could do puremaths further puremaths / a level puremaths

[@wwandda]

hi! i love your content, its helped me so much in exams. Just a little problem- i keep messing up by doing small mistakes! is there any way to prevent this?

[@1stClassMaths]

Hard to do so. Lots of practice and go back and double check your work.

[@sundress_7397]

who else has the same calculater he is using but doesent have the frequency option

[@1stClassMaths]

Older or newer style?

[@sundress_7397]

@@1stClassMaths its the newer model - fx-991CW the same 1 in the video with the gold shift

[@1stClassMaths]

@@sundress_7397 Ok I see. You will have the option you just need to turn it on. I covered this in my video on measures of central tendency at 15:50 (click link below not this timestamp as will keep you in the video). kzbin.info/www/bejne/bHewkKyZhL-picUsi=RRAj0d9LTwSJMj1C&t=950

[@sundress_7397]

@@1stClassMaths appreciate the help. and also are you going to be going over pure topics for year 1 also?