- #SCIENTIFIC METHODS WORKSHEET 3 GRAPHICAL ANALYSIS HOW TO#
- #SCIENTIFIC METHODS WORKSHEET 3 GRAPHICAL ANALYSIS PLUS#
This should explainĬlearly what the table contains.
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The first thing to do is to look at the title. So how do we start to understand what is shown in a table? We are now going to look at the spread or range of a data set. That you encounter. Knowing something about how theĭata is spread will provide you with additional information that will shed more light on Knowing what average has been used is very important when you are trying to understand data Stated the type of average they have used. Per week,” whereas the director might say, “The average pay is $1000 perīoth statements are technically correct because neither party has Their representative could say, “The average pay in the company is only $500 So if there were a dispute about the employees’ pay in the company, To see how the median and mode were calculated take a look at this pencast (click on “View document”). However the median (and also the modal) wage is $500.
#SCIENTIFIC METHODS WORKSHEET 3 GRAPHICAL ANALYSIS PLUS#
The mean wage is: equation sequence five postfix multiplication dollar 500 postfix plus dollar 3500 divided by six equals dollar 6000 divided by six equals dollar 1000. These values are very different, and so it is important that when you meet an "average" value, you find out which average is being used.įor example, suppose a group of five employees in a small companyĮach receive a wage of $500 per week and the director receives $3500 a week. You have now met three different ways of describing an average value:
#SCIENTIFIC METHODS WORKSHEET 3 GRAPHICAL ANALYSIS HOW TO#
Graphs and charts are very useful for displaying the relationship between quantities quickly and in an accessible form, but these can also be used to mislead the unwary reader-so you’ll learn how to critically assess this type of information too.įinally, in Section 11.6, you'll see some of the new types of interactive data visualizations that are becoming more common. The focus will then move to graphs, and different types of charts that all make data easier to understand in Sections 11.3, 11.4, and 11.5.
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In Section 11.2, we will look at how to present and understand data in tables.
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In Section 11.1, we will consider how to summarize a set of data by using an average value, calculated using the mean, median or mode. We encounter this information in the form of statistics too-everything from graphs of the latest home sales figures to census results, the current rate of inflation, or the unemployment rate.īeing able to make sense of data is an important skill. In every aspect of our lives, data-information, numbers, words, or images-are collected, recorded, analyzed, interpreted, and used. Unit 11: Communicating with Data, Charts, and Graphs 11 Introduction