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TI-83 Plus
Statistics
357
Frequency of Occurrence for Data Points
For most
STAT CALC
menu items, you can specify a list of data
occurrences, or frequencies (
freqlist
).
Each element in
freqlist
indicates how many times the corresponding data
point or data pair occurs in the data set you are analyzing.
For example, if
L
1
={15,12,9,14}
and
Ù
FREQ={1,4,1,3}
, then the
TI-83 Plus
interprets the instruction
1
.
Var Stats
L
1
,
Ù
FREQ
to mean that
15
occurs
once,
12
occurs four times,
9
occurs once, and
14
occurs three times.
Each element in
freqlist
must be
‚
0, and at least one element must be > 0.
Noninteger
freqlist
elements are valid. This is useful when entering
frequencies expressed as percentages or parts that add up to 1.
However, if
freqlist
contains noninteger frequencies,
Sx
and
Sy
are
undefined; values are not displayed for
Sx
and
Sy
in the statistical
results.
1
.
Var Stats
1
.
Var Stats
(one-variable statistics) analyzes data with one measured
variable. Each element in
freqlist
is the frequency of occurrence for each
corresponding data point in
Xlistname
.
freqlist
elements must be real
numbers > 0.
Содержание 83PL/CLM/1L1/V - 83 Plus Calc
Страница 228: ...TI 83 Plus Draw Instructions 225 DrawInv expression Note You cannot use a list in expression to draw a family of curves...
Страница 293: ...TI 83 Plus Lists 290 Using Lists in Graphing You can use lists to graph a family of curves Chapter 3...
Страница 407: ...TI 83 Plus Inferential Statistics and Distributions 404 Input Calculated results Drawn results...
Страница 412: ...TI 83 Plus Inferential Statistics and Distributions 409 Data Stats Input Calculated results...
Страница 446: ...TI 83 Plus Applications 443 3 Press to place the cursor on the prompt 4 Press to solve for the annual interest rate...
Страница 454: ...TI 83 Plus Applications 451 tvm_FV tvm_FV computes the future value tvm_FV PV PMT P Y C Y...