Let’s go step by step to understand what this worksheet is asking you to do.
This page is called “Drawing lines of best fit in science.” That means your job is to look at each graph and draw a straight line (or sometimes a smooth curve) that goes as close as possible to all the X marks — but not necessarily through every single one. The line should show the overall trend or pattern in the data.
There are four graphs here. Let’s talk about each one briefly so you know what kind of line to draw:
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Top Left Graph:
- X-axis: Time in minutes (0 to 11)
- Y-axis: Mass of flask and contents in grams (98.5 to 103.0)
- The points start high on the left and go down, then level off around 99.0 after about 6 minutes.
→ You should draw a line that starts steep going downward, then flattens out. It doesn’t have to touch every point — just follow the general shape.
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Top Right Graph:
- X-axis: Concentration of sodium thiosulfate solution (0.00 to 0.15 mol/dm³)
- Y-axis: Rate of reaction (0.000 to 0.010)
- The points go up from left to right — higher concentration = faster rate.
→ Draw a straight line that slopes upward, passing near most points. Don’t force it through every X — aim for balance.
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Bottom Left Graph:
- X-axis: Not labeled, but likely angle of incidence or something similar (we can assume it increases left to right)
- Y-axis: Angle of refraction in degrees (20 to 45)
- Points go up steadily — as x increases, y increases.
→ Draw a straight diagonal line going up from left to right, fitting the trend.
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Bottom Right Graph:
- Only part visible — looks like another set of points with values between 0.8 and 1.2 on y-axis.
→ Same idea: draw a line that follows the general direction of the points.
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Since this is a *mock feedback* sheet, your teacher probably wants you to practice drawing these lines neatly and accurately using a ruler (for straight trends) or freehand (if curved).
You don’t need to calculate anything — just visually estimate where the best-fit line should go.
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Final Answer:
Draw a line of best fit on each graph that follows the overall trend of the data points — sloping down then flat (top left), sloping up (top right and bottom left), and following the visible pattern (bottom right). Use a ruler for straight-line trends; use smooth curves if needed. Do not connect the dots — find the middle path through them.
Parent Tip: Review the logic above to help your child master the concept of line of best fit worksheet.
