Mathss

Graphical show of information and measures of central tendency LECTU RE 2 Introduction ? Summaries of information atomic issuance 18 presented in the results parting of makeups, either in graphs, tabulates. ? The presentation method used depends on the data and the objectives of your study. ? Graphs are usually label and figures and both graphs and mesas are played Introduction ? When deciding on how to present data, deck the more or less raise or burning(prenominal) results (aspects of your report which you want your reader to counseling on) ? Avoid having alike many pages of graphs or one skirt after some other ? Both figures and tables should always have appropriate (brief) title and be labeled so that they stand alone ? When displaying your graphs and tables, always report your synopsis statistics e.g. mean value, n, and one of the measures of dispersion; SD, Variance, or 95% cartel interval Frequency Table ? A table with one column leaning events categories or values of the shifting (x) and the other column listing their individual frequencies (f) or the come in of times the values occur ? select the following data for the levels of sulphur dioxide in the rainfall (ml/ liter of rainwater): 0.7; 0.9; 0.9; 0.7; 0.8; 0.7; 1.0; 0.8; 0.8; 0.9; 0.7; 1.2; 0.6; 0.5; 0.8; 1.0; 1.0; 0.8; 0.6; 0.

8 ? ?f =n = 20 Frequency table x 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 f 1 2 4 6 3 3 0 1 Frequency table ? Where the data may be a bouffant number of values, display data in classes of equal sizes e.g. 0.40-0.49; 0.50-0.59; 0.60-0.69 and so forth This is called group frequency distribution ? Number of classes (Generally recommended to use ! 5-20 classes) ? Width of classes: Related to number of classes Approx. class width = [Largest Data value- Smallest ]/Number of classes Frequency table ? whitethorn reveal the following: ? The range of frequencies observed ? almost where most points lie ? Variability among frequencies- do all values listed in...If you want to have got a full essay, order it on our website: OrderEssay.net

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