Methods2025 Exam 2 Section A · Q11CAS active1 mark

Greatest average rate of change from a chart

The chart below shows the daily price of a stock market share over a 30-day period.

Line chart of share price in dollars (vertical axis 34 to 40) against day (horizontal axis 0 to 30) on a fine grid, with a point plotted for each day from 1 to 30. Prices start near 35.4, dip to 34.8 on day 3, reach 35 on day 14, then rise generally to about 39.4 on day 28 and 39.6 on day 29, ending at 38.8 on day 30.

Over which of the following time intervals did the daily price undergo the greatest average rate of change?

1 mark

Aday 3 to day 10Bday 3 to day 17Cday 14 to day 21Dday 14 to day 28

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