Train yourself:
- Look at many examples
- Reflect on your own practice

​Become a master

Discover the secrets of the criterion C assessment:
- What is expected?
- Formatting and vocabulary.

​Crit. C secrets

Goals

The variables are the key!

Remember or discover

Listen, but more importantly read with great focus the lyrics of the variable song!
Challenge:
Learn and sing the variable song in front of the class during your next science lesson!

The table of results

​Comments on the video

The units:
- are ONLY shown in the header,
- are in brackets.

The headers:
- are on the first line of the table
- describe specifically and clearly the variables.

The cells / boxes:
- contain ONLY numbers
- the numbers have the same format

The average:
- is shown under the same header as the 3 trials
- In the video, they use test 1, test 2 and test 3... we use trial 1, trial 2, trial 3

​Title

The table of results must ALWAYS have a title.
The secrets of a good title:
- the title is NOT inside the table.
- the title describes clearly and specifically the results that are presented.
- the dependent variable and independent variable must be part of the title.

Graph

Main features of a graph

The three next slides will explore the different features of the graph. Take notes!

Specific title: details are given, complete
description of the IV and DV

Y-axis:
Specific
description of
DV with unit in
brackets

X-axis:Specific description of IV with unit in brackets

Evenly distributed
scale, starting at
origin

Scatter plot: DO
NOT JOIN the dots

Patterns in a graph

We are graphing the results of an experiment because it is easier to observe trends and analyse the relationships between the variables.

Trend

Is the DV increasing when IV increases?

Yes-> Positive. No -> Negative

The trend is when you observe the general direction of the graph.

No trend

Sometimes there is no trend.

Relationship

The relationship between your variable is the correlation. You are trying to find a mathematical formula that could connect the IV and DV

In this example, it is a linear relationship because the more I buy chocolate bars the more I will pay in the proportion.

If I buy 2 bars, I pay 4 $
If I buy 4 bars, I pay 8 $

The price increases gradually, the slope of the graph represents the price of 1 bar.

Line of best fit or trend line

When you observe a possible linear relationship, you can insert a line of best fit to your graph.

This will help you comment on how strong the relationship is.

Make your analysis deeper

Now you know everything on trend and relationship.
You can make a deeper observation, you want to use adverbs and adjectives to be even more specific in your analysis.

The next slide gives you the last secret!

Look at those examples

​Very strong linear relationship

Or

Strong linear relationship

​Quite strong linear relationship
or
Fairly strong linear relationship
or
Weak linear relationship

Outlier:

Data that falls outside of the trend - it is not part of the correlation

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