Measures Of Location Flashcards
1
Q
What does xi stands for?
A
Value of observation i
2
Q
Why do we use sample mean?
A
When we want to approximately calculatr mean for entire population u
3
Q
What does sided M means?
A
It is the summation symbol.
4
Q
Weighted mean formula
A
Σ(WiXi)/Σ(Wi)
5
Q
How to calculate geometric mean?
A
Me n e xarisxis fesvi x1x2x3…
6
Q
How to calculate pth percentile and what its symbols stand for?
A
L=(p/100)*n
L-location of pth percentile
P=desire percentile(25th perc)
7
Q
What is a mode?
A
It is the value that occurs with greatest frequency.
8
Q
If L is a whole number what will average will be?
A
Lth and (L+1)
9
Q
If L is not a whole number?
A
Round up to the next integer and use that value.
