Daily Practice

Foundation

3rd August 2024

5 questions · Foundation tier · 282 questions in this band

1
Percentiles
A cumulative frequency graph shows that a value of 18 corresponds to a cumulative frequency of 45 out of 60 total data points. Find the percentile.
2
Crude Rate and Rates of Change
A town of population 10,000 records 20 births in a year. Find the crude birth rate per 1000 people.
3
Spearman's Rank Interpretation
Two data sets give correlation coefficients rs = 0.6 and rs = -0.9. Which shows the stronger relationship?
4
Conditional Probability (Foundation)
A class has 12 boys and 8 girls. One student, a girl, leaves the room. A second student is then chosen at random from those remaining. Find P(second student chosen is a girl given the first was a girl).
5
Estimating from Samples (Foundation)
A sample of 25 students from a school of 500 found that 5 walk to school. Estimate how many of all 500 students walk to school.

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