Texas Instruments TI-34 User Guide - Page 8

Statistics

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Statistics MODE! [SW] [MODE [DEC]. MODE [BIN] , MODE' [OCT], NODE) [HEX] IACIONI [£-] [£x] [Lx2] [R] [an] [an-1] [n] [CE/C Enters STAT mode. Designates number mode. Clears all statistical data, STAT mode. and memory. Enters data point. Removes data point. Sum. Sum of squares. Mean. Population standard deviation (n weighting). Sample standard deviation (n-1 weighting). Number of data points. Clears current entry. Does not affect statistical data or memory. 10 Find the sum, mean, population standard deviation, and sample standard deviation for the data set: 45 55, 55. 55, 60, 80. The last data point is erroneously enteredas 8. removed with MI [£-], and then correctly entered as 80. AC/ON! (to clear data) NODE [STAT] 45 60 EJ 55 El 55El 55 El 8 El 8 0113 [2:-] 80 El [ix] (Sum) [R] (mean) [£.x2] (sum of squares) [an] (n weighting) [an-i] (n-1 weighting) STAT 0. STAT 1. STAT 5. STAT 3. STAT 4. STAT 5. STAT 6. STAT 5. STAT 6. STAT 350. STAT 58.33333333 STAT 21100. STAT 10.67187373 STAT 11.69045194 11

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Statistics
MODE!
[SW]
Enters
STAT
mode.
[DEC].
Designates
number
mode.
[BIN]
,
[OCT],
[HEX]
IACIONI
[MODE
MODE
MODE'
NODE)
Clears
all
statistical
data,
STAT
mode.
and
memory.
Enters
data
point.
[£-]
Removes
data
point.
[£x]
Sum.
[Lx
2
]
Sum
of
squares.
[R]
Mean.
[an]
Population
standard
deviation
(n
weighting).
[an
-1]
Sample
standard
deviation
(n-1
weighting).
[n]
Number
of
data
points.
[CE/C
Clears
current
entry.
Does
not
affect
statistical
data
or
memory.
10
Find
the
sum,
mean,
population
standard
deviation,
and
sample
standard
deviation
for
the
data
set:
45
55,
55.
55,
60,
80.
The
last
data
point
is
erroneously
entered
as
8.
removed
with
MI
[£-],
and
then
correctly
entered
as
80.
AC/ON!
NODE
45
60
EJ
55
El
55El
55
El
8
El
8
0113
[2:-]
STAT
5.
80
El
STAT
6.
[ix]
(Sum)
STAT
350.
[R]
(mean)
STAT
58.33333333
[£.x
2
]
(sum
of
squares)
STAT
21100.
[an]
(n
weighting)
STAT
10.67187373
[an-i]
(n-1
weighting)
STAT
11.69045194
(to
clear
data)
[STAT]
STAT
0.
STAT
1.
STAT
5.
STAT
3.
STAT
4.
STAT
5.
STAT
6.
11