Casio fx-9860G SD User Manual page 326

u u u u u LinearReg
t
Test
t
LinearReg Test treats paired-variable data sets as (
least squares to determine the most appropriate
y
regression formula =
calculates the extent of the relationship between
n
( x – o)( y – p)
i =1
b =
n
(x – o)
i =1
Perform the following key operations from the statistical data list.
3(TEST)
2(t)
3(REG)
The following shows the meaning of each item in the case of list data specification.
& ............................ p-value test conditions ("G 0" specifies two-tail test, "< 0"
XList ............................ list for
YList ............................ list for
Freq ............................. frequency (1 or List 1 to 26)
Save Res .................... list for storage of calculation results (None or List 1 to 26)
Execute ....................... executes a calculation
After setting all the parameters, use c to move the highlighting to "Execute" and then press
the function key shown below to perform the calculation.
• 1(CALC) ... Performs the calculation.
# You cannot draw a graph for LinearReg t
Test.
6-5-16
Tests
a bx
+ . It also determines the correlation coefficient and
a = p – bo
2
specifies lower one-tail test, "> 0" specifies upper one-tail
test.)
x
-axis data (List 1 to 26)
y
-axis data (List 1 to 26)
20050401
x y
, ) pairs, and uses the method of
a b
, coefficients of the data for the
x y
and .
a
: intercept
b
: slope of the line
n – 2
t = r
n : size of sample (n > 3)
2
1 – r
r
: correlation coefficient
2
r
: coefficient of
determination
t
value, and