Sharp el-9950

152
Chapter 8: Statistics & Regression Calculations
2. Statistical evaluations available under the C CALC menu
1_Stats 1-variable (x) statistical a calculations
x
_
Mean of sample (x)
sx Standard deviation of sample (x)
sx =
Σx
2
− nx
2
n − 1
-
σ
x Population standard deviation of sample (x)
-
σx =
Σx
2
− nx
2
n
Σ
x Sum of sample (x)
Σ
x
2
Sum of squares of sample (x)
n Sample number
xmin Smallest value of sample (x)
Q1 First quartile of sample (x)
Med Median of sample (x)
Q3 Third quartile of sample (x)
xmax Largest value of sample (x)
2_Stats 2-variable (x, y) statistical calculations
The following values are added to the 1-variable statistic
calculations
y
_
Mean of sample (y)
sy Standard deviation of sample (y)
σ
y Population standard deviation of sample (y)
Σ
y Sum of sample (y)
Σ
y
2
Sum of squares of sample (y)
Σ
xy Sum of product of sample (x, y)
ymin Smallest value of sample (y)
ymax Largest value of sample (y)