This week is all about some of the charts and graphs we can use for interpreting data and statistical measures. We will look at cumulative frequency graphs and polygons and use them to estimate medians and quartiles. We will use box and whisker plots to compare distributions. We will plot scatter graphs for bivariate data, estimate their lines of best fit and interpolate and extrapolate results from the graphs. Finally we will learn how to calculate and interpret correlation coefficients for bivariate data.
This content is Sections E and F of the scheme of work, which is pretty much finishing off parts 3.1.3 and a bit of 3.1.4 of the specification.
To download the presentation
click here, and to download this week's exercises
click here.
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Chances are, you don't get it. That just means you have to study harder...
Strip from xkcd.com |
