Texas Instruments TI-60 - Page 38

CHAPTER 1-4
STATISTICS
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Display Comments
0 Clear calculator
0 Clear slat registers (only it In
stai mode)
2 Enter the test scores
4
6
6
10
12
13 Enter an extra value
12 Remove the extra vsluo
2nd ][<rn) 12 12321006 Calculate the standard
deviation
ridd ICSRJ 12,12321006 Leave the stal mode
Note that the mean and standard deviation are not affected by the extra
value that was removed tram the statistical registers
(itcl.l ICorr] — Correlation Key
The [2nd. (Corrj Key gives the correlation between tne V and "y" values
A value near 1 indicates that the values are very closely rotated A value
near 0 indicates that the values are only slightly related A value near - 1
indicates that the values are very closely related but In a negative way, that
is, an increase in one is related to a decrease in the other
2nd (Intcp), Ifig] (Slope) — Intercept and Slope Kays
The 3n*l ! (Intcp) Key displays the intercept of the line the calculator
determined was the best line through the points entered The Jnd [Slope]
displays the slope ol the line