stats | iTeachChem | Page 1

lean river Mar 4, 2025, 7:06 AM

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find mean median mode

brittle tendonBOT Mar 4, 2025, 7:06 AM

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<@&1227988399579730072>

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Note for OP

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lean river Mar 4, 2025, 7:06 AM

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mode is clearly 160

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median is 22nd term i.e 155

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for mean i used mode= 3 median - 2 mean somehow this doesnt give correct mean

torpid flint Mar 4, 2025, 7:21 AM

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this is what you get by mean

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while I do agree yes there's a formula for relation between mean median and mode it's not usually used when it's asked separately

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you should just use the formula when they gave only 2 values of median mean and mode and ask you to find the last one

radiant kelp Mar 4, 2025, 7:24 AM

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lean river for mean i used mode= 3 median - 2 mean somehow this doesnt give correct mean

https://math.stackexchange.com/questions/4009873/empirical-relationship-between-mean-median-and-mode-derivation

Mathematics Stack Exchange

Empirical Relationship between mean, median and mode.(Derivation)

How did we get the Empirical Formula?
This formula has been etched into us in school but I want to know how this formula came about and to know if it's applicable for all statistical distributions...

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its an approximation and doesnt work everywhere

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hence the term 'empirical relation'

torpid flint Mar 4, 2025, 7:26 AM

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oh there's a derivation

slim shore Mar 4, 2025, 9:12 AM

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lean river for mean i used mode= 3 median - 2 mean somehow this doesnt give correct mean

It gives an approximation (empirical formula) not an exact answer. Useful to discard wrong options but not good in case of NAT questions

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So you gotta find mean using one of the three known methods:- Direct, Assumed Mean, or Step Deviation

lean river Mar 4, 2025, 9:24 AM

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majduri problem

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thanx everyone

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+solved @torpid flint @slim shore @radiant kelp

#stats