By Stan Gibilisco
Well known science/hobbyist author Stan Gibilisco covers each vital point of uncomplicated (algebra-based) statistics, together with: notation and jargon, describing, tables, graphs, randomness and uncertainty, likelihood rules, distributions, acquiring and analyzing information, correlation, causation, and extra. You'll be capable to examine extra in much less time, evaluation your components of power and weak point and strengthen your wisdom and self assurance.
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Extra info for Statistics Demystified: A Self-Teaching Guide
Example text
If its speed-versus-time graph appears as a perfectly straight line with a small gap, then linear interpolation can be used to determine the car’s speed at points inside the gap, as shown in Fig. 1-19. In this graph, the heavy dashed line represents actual measured data, and the thinner solid line represents interpolated data. 31 PART ONE Statistical Concepts 32 Fig. 1-19. Illustration for Problem 1-9. Quiz Refer to the text in this chapter if necessary. A good score is 8 correct. Answers are in the back of the book.
This shows the results of the tosses of the blue die in the experiment we looked at a while ago. The first column shows the number on the die face. The second column shows the absolute frequency for each face, or the number of times each face turned up during the experiment. The third column shows the cumulative absolute frequency, which is the sum of all the absolute frequency values in table cells at or above the given position. The cumulative absolute frequency numbers in a table always ascend (increase) as you go down the column.
This is true of the tables as well as the graphs. Whenever frequency is portrayed as the dependent variable in a distribution, that distribution is called a frequency distribution. 43 44 PART ONE Statistical Concepts Fig. 2-5. Relative energy available from sunlight, per day, during the course of a year at a hypothetical location. Suppose we complicate the situation involving dice. Instead of one person tossing one die 6000 times, we have five people tossing five different dice, and each person tosses the same die 6000 times.