A relative-frequency histogram from a random sample of 25 observations is irregular. A second random sample of 400 observations from the same population is taken.
State what is likely to happen to the overall histogram shape.
Explain why the two histograms need not have the same shape.
State one feature that a histogram cannot show but a labelled raw-data plot might show.
105 exam-style questions on WJEC A Level Maths 2.2 Data presentation and interpretation, covering 2.2.1 Data presentation and interpretation, 2.2.2 Data presentation and interpretation, 2.2.3 Data presentation and interpretation, 2.2.4 Data presentation and interpretation, 2.2.5 Data presentation and interpretation, 2.2.6 Data presentation and interpretation, 2.2.7 Data presentation and interpretation, 2.2.8 Data presentation and interpretation, and 2.2 Data presentation and interpretation. Each one has a worked solution and a mark scheme showing where the marks go.