Sharp el-9950

171
Chapter 8: Statistics & Regression Calculations
4. Press
@
h
.
05 TtestLinreg Tests the significance of the slope for the linear regression and its
correlation coefficient
ρ
.
Example
The test is for the slope
β
, and correlation coefficient
ρ
obtained
fromstatisticaldataX{65,56,78,86,92,71,68}andY{95,59,
88,78,75,68,80}arenotequaltozero(
β
&
ρ ≠
0.)
1. InputtheabovelistsXandYintolistsL1andL2,respectively.
2. Press
S
E
0
5
.
The parameter input screen
will appear.
3. Enter the appropriate value
into each field.
• Equationitemsmaynotbe
required.
• Ifalinearregression
calculation has been
executed using the data, and the function equation has been
storedinY0toY9,inputthatequationnumberfortheequation
items.
4. Press
@
h
.
Answersaredisplayedonthe
screen, where a, b indicate
regression coefficients, s
indicates standard deviation,
r indicates the correlation
coefficient, and r
2
indicates the coefficient of determination.