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Junior Cycle · Junior Cycle Science

Junior Cycle Science: Analysing data & graphs

How often Analysing data & graphs comes up on the Science papers, every year it was asked, and questions to try.

CL Asked on 6 of the last 6 Common Level papers, most recently in 2026. banker

Analysing data & graphs, Common Level(6 marks)

Quick ones on Analysing data & graphs.

(a)Time and temperature are both continuous measurements. Which graph suits them best?
  1. Bar chart
  2. Line graph
  3. Tally chart
(b)Results in separate categories, such as eye colour in a class, are best shown on a?
  1. Heating curve
  2. Line graph
  3. Bar chart
(c)When plotting a graph, the independent variable usually goes on which axis?
  1. The x-axis (horizontal)
  2. Either one, it never matters
  3. The y-axis (vertical)
Show the answers

(a) Line graph

(b) Bar chart

(c) The x-axis (horizontal)

Your turn: Common Level questions on Analysing data & graphs.

Common Level

Asked on 6 of the last 6 Common Level papers, most recently in 2026. banker

Every paper, year by year

YearWhere it came up
2026Q15
2025Q3, Q14
2024Q10, Q12, Q14, Q15
2023Q12, Q14
2022Q15
2019Q11, Q12, Q16

Links open the State Examinations Commission’s paper for that year.

More Analysing data & graphs questions

Analysing data & graphs, 2 marks

Each axis label on a graph should give the quantity and its?

  1. Colour
  2. Average
  3. Unit
Show the answer

Unit

Axes are labelled like Time (s) or Mass (g). Without the unit, a reader cannot tell whether 5 means 5 seconds or 5 minutes. Units often carry marks.

Analysing data & graphs, 3 marks

Hypothesis: heavier balls fall faster. Result: all the balls hit the ground together. What follows?

  1. The hypothesis is proven true
  2. The data does not support it
  3. The data supports it
Show the answer

The data does not support it

If heavier balls fell faster they would land first. They did not, so the result goes against the hypothesis. Data can support a hypothesis or not support it.

Analysing data & graphs, 3 marks

A straight-line graph shows 10 g of a solid dissolves at 20 °C and 20 g at 40 °C. Estimate the mass at 30 °C.

  1. 15 g
  2. 25 g
  3. 30 g
Show the answer

15 g

30 °C is halfway between 20 °C and 40 °C, so on a straight line the mass is halfway between 10 g and 20 g: 15 g. Reading between plotted points is called interpolation.

Other Science topics

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