Final comments. You will no doubt have noticed that we have not included any three-dimensional graphs in this chapter. This is because we believe that they do not present data as clearly as two-dimensional graphs.
Complete the following sentences:
It is necessary to group the values…
Once you have grouped the data for your numerical variables…
There is a wide range of graphs that…
Histograms are especially useful when …
Before drawing your histogram you will nearly always need …
The main differences between the appearance of a bar chart and a /histogram are …
Line graphs should be used when you want…
Scatter graphs, also called scatter plots, are used to show ..
The strength of any relationship is represented by …
6. Ask 10 disjunctive questions to the text.
7. Answer the following questions:
What graphs are used to emphasise the highest and lowest categories for one variable?
Why do we use a line graph?
What is the difference between a box plot and multiple box plot?
What is a histogram?
What do you need to do before drawing a histogram?
What are the main differences between the appearance of a bar chart and a /histogram?
Why is the horizontal axis used on line graphs?
Why is the horizontal and vertical axis used in scatter graphs?
8. Get ready to speak about the graphs. Use the following phrases:
Our topic deals with…
To begin with…
I’d like to say a few words about…
I’d like to add that…
It’s necessary to note that…
One cannot help saying about…
In addition…
That’s why….
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