Bedienungsanleitung HP streamsmart 400 (Seite 11 von 60) (Englisch)

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HP Mobile Calculating Laboratory

The Statistics Aplet

The StreamSmart Aplet works seamlessly with the Statistics Aplet to provide you all

the tools you need to collect and analyze data. StreamSmart does the collection

of the data and selection of a final data set for analysis, then exports the data

directly to the Statistics Aplet, where additional graphing and analysis occurs. As

stated previously, the HP MCL can collect data from up to four sensors

simultaneously. In addition, each sample comes with a timestamp. The HP MCL

combines these readings into an ordered data-tuple:

(timestamp, channel 1 sensor, channel 2 sensor, channel 3 sensor, channel

4 sensor)

Of course, one or more of the four channels may not have a sensor attached. In

that case, the ordered data-tuple is shortened appropriately. Once you select the

data you want to analyze, the data is sent to columns in the Statistics Aplet. The

Statistics Aplet has ten columns available for data, C1 through C9, and C0. You

may choose a destination column for each value in the ordered data-tuple of your

experimental data, or use the default values provided. The result is that each data-

tuple becomes a row in a set of columns in the Statistics Aplet.

When you export data to the Statistics Aplet, you can choose to follow your data

into the Statistics Aplet for analysis or stay in the StreamSmart Aplet to continue

experimentation. In-depth analysis of the data, including the calculation of

summary statistics (for 1 or 2 variables) and modeling bi-variate data with various

fits, is performed in the Statistics Aplet. This manual contains a brief introduction

to the Statistics Aplet, but for more information about the Statistics Aplet, refer to

the HP 39/40gs User’s Guide.

Manual conventions

Throughout this manual, a few conventions have been employed to help you find

the functions under discussion. There are four notational conventions,

corresponding to primary key functions, shifted key functions, and functions in

menus:

1. Functions on the keyboard appear in their own special font. For example,

the ENTER key appears as

`. Shifted functions will be noted as such and

referenced both by the function name and the key combination required, as

in the function, @ R (Plot Setup).

2. The HP 39/40gs calculators employ context-sensitive menus that appear

along the bottom of the display. The functions in these menus are accessed

via the top row of keys on the keyboard directly below the screen display.

There are six of these menu keys in all. For example, in the Plot screen

capture in Table 1-2, the four items shown in the menu are: CHAN, PAN,

SCOPE, and STOP. Throughout this guide, these keys appear in a special

font when they represent a key press. For example, when the ZOOM

function appears in a step as a key press, it is represented by @ZOOM.

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