/ means DIVISION
* means Multiplication
tita You Should Know that.
rais means Raise to power or
^ means Raise to power
sqr rut/square rut means Square root
—–(1) means Equation 1
yr means Year
f(x-xbar) means x MINUS x BAR as in statistics which means that MINUS will be on Top of x. ,
(Comma) means NEXT LINE, This means that The Following Number is Under The Number its Following ie. UNDER. It is usually used during STATISTICS when drawing a table.
EXAMPLE for Waec 2021 Mathematics Expo
1 X: 1,2,3,4,5,6
DRAW A TABLE WITH
The above statement means that:
~ For X, it has 1 2 3 4 5 6 under it.
which means 1 is under 2,
2 is under 1, 3 is under 2, 4 is under 3 and so on…
~ Under FX you have 4, then 6 under 4, then 8 under 6, then 10 under 8, then 12 under 10.
~ Under FX-Xbar you have 10, then 8 under 10, then 6 under 8, then 4 under 6, then 2 under 4, then 1 under 2.
MEANING OF THE ABOVE EXPRESSION:
Bar means Minus on top of d number or Variable and comma means next line which means each of them are unda.
Eg 60-64 is unda Class interval, then 65-69 is unda 60-64,etc .So comma means unda.
NOTE: When you see something like the above example two, you will have to draw a table. we will update more later! Please if you have any quetions, kindly use the comment box