Daily Practice

Foundation

15th July 2024

5 questions · Foundation tier · 282 questions in this band

1
Skewness by Inspection
A shop's till receipts have mode 5 pounds, median 8 pounds, mean 15 pounds. State the type of skew and give a reason.
2
Percentiles
In a data set of 200 values, at what position, counting from the smallest, would you expect to find the 25th percentile?
3
Crude Rate and Rates of Change
A city's population grows from 50,000 to 52,000 in one year. Find the percentage rate of change.
4
Spearman's Rank Interpretation
The Spearman's rank correlation coefficient between temperature and ice cream sales for 8 days is rs = 0.95. Describe the correlation.
5
Conditional Probability (Foundation)
A pack of 10 cards is numbered 1 to 10. One card is drawn and not replaced; it is even. A second card is then drawn. Find P(second card is even given the first card was even).

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