IB myp 4-5 MATHEMATICS – Practice Questions- All Topics
Topic :Statistics & Probability–Dependent and independent events
Topic :Statistics & Probability- Weightage : 21 %
All Questions for Topic : Measure of dispersion: standard deviation,Correlation, quantitative handling, using technology,Histograms for continuous fixed interval groups,Addition and multiplication rule-conditional probability,Probability calculations,Dependent and independent events
Question
The students have conducted an experiment in their maths class to test the claims of the advertisements. In the experiment, students have tested nine batteries from GeneriCell and measured the lifetime of the batteries. The results are shown in Table 1 to the nearest minute. A higher number indicates that the battery has a longer lifetime.
Question (a)
Using the box-and-whisker plot, write down the percentage of batteries with a lifetime between 488 and 506 minutes from GeneriCell.
▶️Answer/Explanation
Ans:
$50 \%$
Question (b)
The experiment is repeated for the Maximizer brand. The times are recorded in Table 2 to the nearest minute.
On the canvas provided, draw a box-and-whisker plot to summarize the data given in Table 2 for Maximizer. The draggable lines can be resized as required.
▶️Answer/Explanation
Ans:
The five values required of the blue box and whisker plot: Min 478, LQ 494, Median 502, UQ 503, Max 509
