Texas Instruments TI-36X Pro User Manual

42
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.
1. Find Anthony’s average grade (weighted average).
2. What does the value of n given by the calculator
represent? What does the value of Gx given by the
calculator represent?
Reminder: The weighed average is
3. The teacher gave Anthony 4 more points on test 4 due to a
grading error. Find Anthony’s new average grade.
Stat %u
3 (Selects 2-Var Stats)
$ $ $
< %s
%u 1
# # # # # #
< 45 ) <
Test No. 1234
Score 12131011
Coefficient 1 0.5 1 0.5
v v $ $ $
Σx
n
------
12()1() 13()0.5()10()1() 11()0.5()+++
10.510.5+++
--------------------------------------------------------------------------------------------------------
=

Texas Instruments TI-36X Pro Specifications

General

Type	Scientific
Cover	No
Form factor	-
Product color	Black
Digits	16 digits
Display number of lines	4 lines
Storage media type	Not available
Power source	Solar