what would be the quickest way to calculate the weighted mean after plugging it into the formula? should I calculate it via the onscreen calculator or practice mental arithmetic? I apologise, it just seems really long winded to plug everything into a formula and then calculate it in the time frame allowed. but other than that, this video was really helpful!
Hi Ariba, it really depends on the question. So for the one on Jude and his work at Endsleigh Court, you can divide by 52 at the end of the question, to save you time. Apart from that, there is no faster way. These questions tend to be long winded so consider flagging and guessing on test day if you can see from the offset that they are quite long winded. Good luck with the revision!
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what would be the quickest way to calculate the weighted mean after plugging it into the formula? should I calculate it via the onscreen calculator or practice mental arithmetic? I apologise, it just seems really long winded to plug everything into a formula and then calculate it in the time frame allowed.
but other than that, this video was really helpful!
Hi Ariba, it really depends on the question. So for the one on Jude and his work at Endsleigh Court, you can divide by 52 at the end of the question, to save you time. Apart from that, there is no faster way. These questions tend to be long winded so consider flagging and guessing on test day if you can see from the offset that they are quite long winded. Good luck with the revision!
May i ask, where does the 52 come from?
i guess its because 52 weeks a year
Hi in the first esercice i don't understand where : 1/3 and 2/3 come from
@ziya rasool me thinks so too
10 boys and 20 girls so boys is 1/3 and girls is 2/3
Quite disappointed as some of these video are inaccurate and so caused me to self doubt
?