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Daily Practice

Foundation

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23rd January 2025

5 questions · Foundation tier · 282 questions in this band

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  1. 1
    Experimental Design

    What is a control group used for?

  2. 2
    Median Quartiles and IQR

    A data set has Q1 = 22 and Q3 = 35. State the interquartile range and explain what it measures.

  3. 3
    Index Numbers

    An index number is 140 with a base value of 20. Find this year's value.

  4. 4
    Frequency Tables and Tally Charts

    Using the survey in the previous question (Red 6, Blue 9, Green 4, Yellow 5), which colour is the mode?

  5. 5
    Time Series and Moving Averages

    Find the 3-point moving average of 14, 18, 20.

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