maths

Cards (11)

how to calculate lcf using the sock method 
everything on the left times by the bottom number
how to calculate hcf using the sock method 
everything on the left
only add and subtract fractions with the same
denominator
how to calculate percentage change 
change/original X 100
how to decrease by a percentage 
100-percentage decrease/100
how to increase by a percentage 
100+percetage increase/100
how to calulate mean of a grouped frequency table 
midpoint X frequency=( fx) then the total fx/total frequency
how to calculate the median of a grouped frequency table  
n+1/2
n=total frequency
describe positive correlation 
going from the beginning of the graph upwards
describe negative correlation 
from the top beginning of the graph to the bottom
how to plot a frequency polygon 
use the midpoint and then plot the points normally