Texas Instruments TI-30XS User Manual - Page 33
Data: 45,30; 55,25. Find: x - on screen calculator
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Stat Var 2 < V 2 < 2-Var: Data: (45,30); (55,25). Find: xÅ(45) Clear all v v$$$ data Data
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Copyright © 2006 Texas Instruments Incorporated
33
2-Var:
Data: (45,30); (55,25). Find: x
Å
(45)
³
Problem
For his last four tests, Anthony obtained the following scores.
Tests 2 and 4 were given a weight of 0.5, and tests 1 and 3
were given a weight of 1.
Stat Var
2
<
V
2
<
Clear all
data
v v$$$
Data
<
45
$
55
$"
30
$
25
$
Stat
%t
2
(Your screen may not
show
3:StatVars
if you
did not previously perform
a calculation.)
$ $
<######
<
45
E
<
Test No.
1
2
3
4
Score
12
13
10
15
Coefficient
1
0.5
1
0.5