At what temperature would the manager predict to sell 800 drinks? How many employees will be needed for tomorrow's predicted temperature of 43oC?

Table 12-3 Example entering statistical data, opening the editor, and predicting

KeysDisplay Description

\t

STAT CLR

Clears the statistics memory.

 

 

(message flashes briefly,

 

 

then disappears)

 

 

 

 

DGÆYJV¡

1.00

Enters first ordered pair.

 

 

 

 

DVÆVJV¡

2.00

Enters the second ordered pair.

 

 

 

 

DgÆjGV¡

3.00

Enters the third ordered pair.

 

 

 

 

1 32.00

Open the editor. Displays X

 

annunciator.

 

 

 

11111

 

starting with the x-value of the

 

3 725.00

Scroll and verify the data points,

 

 

first pair. The y-value of the third

 

 

pair is displayed.

 

 

 

M

 

Exit the editor.

 

 

 

 

 

]LY

0.00

Set the regression model to

 

power. 4–POWER flashes briefly

 

 

after Yis pressed, then

 

 

disappears.

 

 

 

g::\Z

39.49

Predict the temperature.

 

 

 

 

\«\5d

.988080878

Display the correlation

 

coefficient.

 

 

 

YD\W\5G

 

tomorrow.

 

1,053.49

Predict the number of drinks sold

 

 

 

aG::4

 

employees at work tomorrow to

 

5.27

Manager should have at least 6

cover the expected load.

Continuing with this example, modify this data by adding more points: two additional days of sales and their corresponding temperatures. The first day’s temperature of 43oC resulted in

the sale of 1,023 cold drinks. The next day’s temperature at 37oC resulted in the sale of 685 drinks.

Statistical Calculations 117

Page 125
Image 125
HP 10bII+ Financial manual Dgæyjv¡, Dvævjv¡, YD\W\5G

10bII+ Financial specifications

The HP 10bII+ Financial Calculator is a versatile and powerful tool designed to meet the needs of finance students, professionals, and anyone involved in financial planning and analysis. Known for its compactness and user-friendly interface, this calculator incorporates a range of features specifically tailored for financial calculations, making it an essential gadget for banking, real estate, and investment analysis.

At the heart of the HP 10bII+ is its ability to perform a wide variety of financial functions, including time value of money calculations, cash flow analysis, bond pricing, and depreciation. Its built-in functions facilitate the computation of interest rates, present and future values, net present value (NPV), internal rate of return (IRR), and annuities. This array of functionalities allows users to tackle complex financial problems with ease.

One of the standout technologies in the HP 10bII+ is its RPN (Reverse Polish Notation) input system, which allows for efficient data entry and calculation. Users can perform consecutive calculations without the need for parentheses, streamlining the process significantly. Alternatively, the calculator can also function with a standard algebraic input, catering to different user preferences.

The design of the HP 10bII+ is sleek and compact, making it highly portable and easy to handle. With a large, easy-to-read display, it ensures that users can view their calculations clearly, even in low-light environments. The keys are well-spaced and tactile, allowing for a comfortable typing experience during intensive calculations.

The calculator also offers a range of memory functions, enabling users to store and recall important values easily. This is particularly useful for financial professionals who must deal with multiple calculations and refer back to previous results frequently.

Additionally, the HP 10bII+ is powered by two AAA batteries, providing a long battery life that ensures reliability during extended use. It also features an automatic shut-off function, which conserves battery life when the calculator is not in use.

In summary, the HP 10bII+ Financial Calculator is a high-performance device that combines essential financial functions with user-friendly design and robust technology. Whether for educational purposes or professional finance work, its capabilities make it an invaluable asset for anyone dealing with financial calculations and decision-making.