Casio fx-9750G Statistical Graphs and Calculations Manuel d'utilisateur Page 1

Chapter18Statistical Graphs andCalculationsThis chapter describes how to input statistical data into lists, andhow to calculate the mean, maximum and

292kkkkk Drawing an xy Line GraphPaired data items can be used to plot a scatter diagram. A scatter diagram where thepoints are linked is an xy line g

293kkkkk Displaying Statistical Calculation ResultsWhenever you perform a regression calculation, the regression formula parameter(such as a and b in

29418-3 Calculating and Graphing Single-VariableStatistical DataSingle-variable data is data with only a single variable. If you are calculating theav

295From the statistical data list, press 1 (GRPH) to display the graph menu, press 6(SET), and then change the graph type of the graph you want to use

29618 - 3 Calculating and Graphing Single-Variable Statistical Datakkkkk Displaying Single-Variable Statistical ResultsSingle-variable statistics can

29718-4 Calculating and Graphing Paired-VariableStatistical DataUnder “Plotting a Scatter Diagram,” we displayed a scatter diagram and then per-formed

2986(DRAW)The following are the meanings of the above parameters.a ... Med-Med graph slopeb ... Med-Med graph interceptkkkkk Quadratic/Cubic/Qua

299Quartic regressiona ... Quartic regression coefficientb ... Cubic regression coefficientc ... Quadratic regression coefficientd ... Lin

3006(DRAW)The following are the meanings of the above parameters.a ... Regression coefficientb ... Regression constant termr ... Correlation

301kkkkk Displaying Paired-Variable Statistical ResultsPaired-variable statistics can be expressed as both graphs and parameter values.When these grap

28418-1 Before Performing Statistical CalculationsIn the Main Menu, select the STAT icon to enter the STAT Mode and display thestatistical data lists.

302kkkkk Copying a Regression Graph Formula to the Graph ModeAfter you perform a regression calculation, you can copy its formula to the GRAPHMode.The

3036(DRAW)1(X)• The text at the top of the screen indicates the currently selected graph (StatGraph1= Graph 1, StatGraph2 = Graph 2, StatGraph3 = Grap

30418-5 Other Graphing Functionskkkkk Manual GraphingIn all of the graphing examples up to this point, values were calculated in accord-ance with View

30518-6 Performing Statistical CalculationsAll of the statistical calculations up to this point were performed after displaying agraph. The following

306Now you can press f and c to view variable characteristics.For details on the meanings of these statistical values, see “Displaying Single-Vari-abl

307Next, you can use the following.1 (X) ... Linear regression2 (Med) ... Med-Med regression3 (X^2) ... Quadratic regression4 (X^3)

3084. Press the keys as follows.ea(value of xi)K5(STAT)2( )wThe estimated value is displayed for xi = 40.baaa(value of yi)1( )wThe estimated value

309• Probability P(t), Q(t), and R(t), and normalized variate t(x) are calculated usingthe following formulas. Example The following table shows the

3102. Use the STAT Mode to perform the single-variable statistical calculations.2(CALC)6(SET)c3(List2)J1(1VAR)3. Press m to display the Main Menu, and

311kkkkk Probability GraphingYou can graph a probability distribution with Graph Y = in the Sketch Mode. Example To graph probability P(0.5)Perform t

28518-2 Paired-Variable Statistical CalculationExamplesOnce you input data, you can use it to produce a graph and check for tendencies.You can also us

286• You can specify the graph draw/non-draw status, the graph type, and other gen-eral settings for each of the graphs in the graph menu (GPH1, GPH2,

2871. Graph draw/non-draw status (SELECT)The following procedure can be used to specify the draw (On)/non-draw (Off) statusof each of the graphs in th

2882. General graph settings (SET)This section describes how to use the general graph settings screen to make thefollowing settings for each graph (GP

2892. Use the function key menu to select the StatGraph area you want to select.1 (GPH1)... Graph 12 (GPH2)... Graph 23 (GPH3)... Graph 3uuuuuTo

2906(g)1 (Log) ... Logarithmic regression graph2 (Exp) ... Exponential regression graph3 (Pwr) ... Power regression graph6 (g) ...

2913 (List3) ... List 34 (List4) ... List 45 (List5) ... List 56 (List6) ... List 6uuuuuTo select the frequency data list (Frequency)1