HP 20b Business Consultant Financial Calculator User Manual Page 79
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Statistical Operations
71
*Does not apply to the HP 20b.
y Std. Dev Standard deviation for y: a measure of how dispersed the y data values are about
the mean.
x Population Dev Population Standard deviation for x: a measure of how dispersed the x data values
are about the mean, assuming the data constitutes a complete set of data.
y Population Dev Population Standard deviation for y: a measure of how dispersed the y data values
are about the mean, assuming the data constitutes a complete set of data.
S.E.Samp.
x Standard error for the sample x: a measure of the dispersion of x mean, assuming
the data is a sampling of a large, more complete data set.
S.E.Samp.
y Standard error for the sample y: a measure of the dispersion of y mean, assuming
the data is a sampling of a large, more complete data set.
Pred
x Predicts x for a given hypothetical value of y, based upon the model calculated to fit
the data.
Pred
y
Predicts y for a given hypothetical value of x, based upon the model calculated to fit
the data.
a The a coefficient for the chosen regression model, which is the slope for a linear
model.
b The b coefficient for the chosen regression model, which is the y-intercept for a linear
model.
c
The c coefficient for the chosen regression model, applies only for ax
2
+bx+c.
Correlation
The correlation coefficient for the given (
x, y) data. The correlation coefficient is a
number in the range -1 through 1 that measures how closely the calculated line fits
the data.
Covariance A measure of how much two variables change in relation to one another.
The sum of the
x values.
The sum of the
y values.
The sum of the squares of the
x values.
The sum of the squares for the
y values.
The sum of the products of the
x and y values.
Quartiles* The boundaries of a given frequency distribution divided into four parts.
Median* The middle value in a given frequency distribution.
Maximum* The largest value in a given frequency distribution.
Minimum* The lowest value in a given frequency distribution.
Table 12-1 The Statistics Menu Items
Menu Item Description
Σx
Σy
Σx
2
Σy
2
Σxy
- HP 20b Business Consultant 1
- HP 30b Business Professional 1
- Legal Notice 2
- Keyboard Map Legend 5
- Table of Contents 7
- Selecting a Language 9
- Two Line Display 10
- until the 11
- <<< 12
- << 12
- Basic Features 13
- Annunciators 14
- The Input Key 14
- The Equals Key 14
- Editing and Clearing Entries 15
- The On/CE Key 15
- The Reset Menu 15
- Notes about Special Menus 16
- Memory and the Memory Menu 16
- Accessing Menus and Menu Maps 16
- or > 17
- returns 17
- with that 17
- Basic Features10 18
- Mathematical Functions 19
- Number Entry and Display 19
- Chain Mode 20
- Algebraic Mode 20
- I or = are valid 21
- I, this 22
- + changes the 22
- <<<< 23
- Mathematical Calculations 25
- Mathematical Calculations18 26
- Random number 27
- The Math Menu 27
- I on any of these items to 28
- The Probability Sub-menu 29
- Binomial Functions 31
- Two-Number Functions 31
- Storing and Recalling Numbers 32
- Recall Arithmetic 32
- returns 0.25 33
- % to add or subtract x % 34
- - returns 150, or 200-25% 34
- 3 Time Value of Money 35
- :x. Press < or > 37
- A. The Amortization 37
- V, M and [ 37
- A followed by < or 38
- I to reset, or O to cancel 40
- :& 41
- O once again 42
- Canadian Mortgage Example 44
- as 1 is the default 45
- Cash Flow Example 46
- P and IRR R 49
- Cash Flows42 50
- Editing Cash Flows 52
- Sample Cash Flow Diagrams 54
- = to calculate it 56
- Bond Calculation Example 57
- O again to exit the menu 58
- :(HOLD)B 59
- The Black-Scholes Menu 60
- (the Black-Sholes key) 60
- = in the 61
- to scroll through the menu 62
- :(HOLD) B 63
- to scroll to the 64
- 8 Date Calculation 65
- 9Break-even 67
- The Percent Calculation Menu 69
- repeatedly to scroll to the 69
- Percent Calculation Examples 70
- to reset the menu, or O to 72
- 11 D e p r e c i a t i o n 73
- The Depreciation Menu 74
- Depreciation Example 75
- 12 Statistical Operations 77
- The Data and Stats Menus 78
- Statistics Example 80
- :z<< 82
- 13 Programming 83
- : and simultaneously 83
- : >or< 84
- Programming Example 85
- Program Step 0 86
- : and the < 87
- Programming80 88
- Figure 2 88
- (HOLD) 89
- Sub-Function Call 90
- and (HOLD) functions 90
- .05003:$1 91
- Messages 92
- (HOLD) . If you want to 93
- Programming86 94
- Table 13-4 94
- Digit Description 94
- Programming88 96
- 14 E rro r M e s s a g e s 97
- Replacing the Batteries 99
- Regulatory Information 100
- Modifications 101
- Canadian Notice 101
- Avis Canadien 101
- Japanese Notice 102
- Korean Notice 102
- Contact Information 103
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