Casio FX-9860GII-L-IH User Guide - Page 326

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) b = i=1 n Σ(x - o)2 i =1 a = p - bo t=r n-2 1 - r2 a : intercept b : slope of the line n : size of sample (n > 3) r : correlation coefficient r2 : coefficient 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 specification. 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. 20050401