Long long long time ago, I had studied but forgotten totally

A	data
B	Data_area
C	group	particular group or interval
D	Bins_area	The max of the group
E	Frequency	Count of the group
F	Relative Frequency (%)
G	Cumulative Frequency
H	Relative Cumulative Frequency(%)
I	amount	Total frequency
K	Mean Average(A)	average
L	Median Median(A)	median
M	Deviation Avedev(A)	absolute deviations from the mean
N	Variance Var (A)	ΣM2/I-1 It describes how far values lie from the mean
O	Standard Deviation Stdevp(A)	√(ΣM2/I) or √N How much variation there is from the "average". ↑spread out↑ ↓àclose to the mean
P	Coefficient of Variation	The percentage of O O/K
Q	Standard Score Standardize(A,H,L)	(A-K)/O how many standard deviations an observation or datum is above or below the mean ↓àclose to the mean
R	Deviation Score	Q*10+50
S	Pareto Analysis	order data             count Cumulative Frequency             draw histogram   x axisàitem   y axisà$$   2th yaxisàF
T	Scatter gram	x axisàreason X1 y axisàresult Y show the relation between Y and X1 if the data trend to become a line, they have strong relations
U	Covariance Covar(X1,Y)	how much two variables change together
V	Coefficient of Correlation CORREL(X1,Y)	U/X1’O * Y’O The relationship between the two samples