Moving averages (AQA GCSE Statistics): Flashcards
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Practise the cards
10 cards from this deck
What is a trend line in statistics?
What is a trend line in statistics?
A line showing overall data direction over time.
How do you plot a 3-point moving average?
How do you plot a 3-point moving average?
Plot at the middle time period of the data set.
Where to plot a 4-point moving average?
Where to plot a 4-point moving average?
At the midpoint between the 2nd and 3rd periods.
What to consider when drawing a trend line?
What to consider when drawing a trend line?
Focus on overall data trend, not individual points.
How to describe a decreasing trend line?
How to describe a decreasing trend line?
Sales are decreasing over the observed time period.
What is the purpose of a trend line?
What is the purpose of a trend line?
To identify patterns in data, smoothing fluctuations.
What is the first step in creating a trend line?
What is the first step in creating a trend line?
Plot the data points on a graph.
Why is equal distribution important in trend lines?
Why is equal distribution important in trend lines?
Ensures accuracy in representing data trends.
What language should you use to describe trends?
What language should you use to describe trends?
Use clear terms like increasing, decreasing, constant.
What is a common mistake in plotting moving averages?
What is a common mistake in plotting moving averages?
Incorrectly positioning them on the time series graph.