Question: JUST LET ME KNOW WHAT IS THE CORRECT FORMULA IM CONFUSED I am so confused, what formula is correct.. in online like youtube or google

JUST LET ME KNOW WHAT IS THE CORRECT FORMULA IM CONFUSED

I am so confused, what formula is correct..

in online like youtube or google i see that the formula to get Quartiles is

Q1 = ( n + 1 ) x 1/4

Q3 = ( n + 1 ) x 3/4

but according to what my professor said

Q1 = ( p/100) x n

= ( 25/100 ) x n

Q3 = (75/100) x n

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