Casio SERIES FX-9860G - Manual (Page 329)

20070201
u LinearReg t Test
LinearReg t Test treats paired-variable data sets as ( x , y ) pairs, and uses the method
of least squares to determine the most appropriate a , b coeffi cients of the data for the
regression formula y = a + bx . It also determines the correlation coeffi cient and t value, and
calculates the extent of the relationship between x and y .
a : intercept
b : slope of the line
n : size of sample ( n > 3)
r : correlation coeffi cient
r 2 : coeffi cient of
determination
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 specifi cation.
β & ρ ............................ p-value test conditions (“G 0” specifi es two-tail test, “< 0”
specifi es lower one-tail test, “> 0” specifi es upper one-tail
test.)
XList ............................. list for x -axis data (List 1 to 26)
YList ............................. list for y -axis data (List 1 to 26)
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.
b =
Σ
(x – o)( y – p)
i=1
n
Σ
(x – o) 2
i=1
n
a = p – bo t = r
n – 2
1 – r 2
b =
Σ
(x – o)( y – p)
i=1
n
Σ
(x – o) 2
i=1
n
a = p – bo t = r
n – 2
1 – r 2
# You cannot draw a graph for LinearReg t Test.
6-5-16
Tests