Sum - Texas Instruments TI-73 Explorer Manual Book

132
Chapter 7: Statistical Analyses
sum( - v " " 7 7

sum(

(summation) returns the sum of all elements in list.
sum(
Specify the additional optional arguments to return the sum of
the range of elements between start and end. start and end
represent element places, not the element values.
To add the entire list:
list
sum(
To add the range of elements from start to the last element in
list:
list,start
sum(
To add the range of elements between start and end:
list,start,end
sum(
³
Find the sum of
¨SUM={3,10,36,14,33,5,22,45}
1. Create a list, in the List
editor,
3
For more information on entering lists,
see Chapter 5: Lists.
2. Return to the Home screen,
and calculate the partial list
sum.
- l :
- v " "
- v
¡
)
)
)
between elements 4 and 6, where
¨SUM
.
.
SUM
7
b
SUM
¡ E b
4 6