median
middle number when i order
mode
number that appears the most
range
biggest - smallest
what not to forget in a steam and leaf diagram
a key
what do you do for a frequency pologon?
find the midpoint
on a histogram, what does frequency represent?
the area of the bar
on a histogram:
x - axis
y - axis
= class interval
= frequency
————————-
width of class interval
mean
how many
what do you do for a cumulative frequency column?
add up as you go along
interquartile range
upper quartile - lower quartile
where is the median, LQ and UQ?
half way been the CF = median
half way between lowest and median = LQ
half way between the highest and median = UQ