Casio fx9860G 1 – r, Σ(x – o)2, Σ( x – o)( y – p), u LinearReg t Test

6-5-16 Tests

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 coefficients of the data for the regression formula y = a + bx. It also determines the correlation coefficient and t value, and calculates the extent of the relationship between x and y.

	n
	Σ( x – o)( y – p)
				n – 2
b =	i=1	a = p – bo	t = r
	n			1 – r	2
	Σ(x – o)2

i=1

Perform the following key operations from the statistical data list.

3(TEST)

2(t)

3(REG)

a: intercept

b: slope of the line

n: size of sample (n > 3) r : correlation coefficient r2 : coefficient of

determination

The following shows the meaning of each item in the case of list data specification.

β & ρ ............................	p-value test conditions (“G 0” specifies two-tail test, “< 0”
	specifies lower one-tail test, “> 0” specifies 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.

# You cannot draw a graph for LinearReg t Test.

20070201