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IGCSE — free MCQ practice

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IGCSE subjects

Mathematics (30)

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Data HandlingDescriptive StatisticsMathematicsStatistics

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A teacher splits the value 23 for a stemplot. The stem is two and the leaf is:Read the answer and worked solution →One value in a data set sits far away from all the others. That value is called an:Read the answer and worked solution →A researcher has 400 measurements to display. The recommended graph for a set that large is a:Read the answer and worked solution →For clarity a histogram usually holds a number of bars between:Read the answer and worked solution →

Worked practice questions

A teacher splits the value 23 for a stemplot. The stem is two and the leaf is:

  1. Three
  2. Seven
  3. Eight
  4. Nine
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Correct answer: A. Three

1. A stemplot cuts each value at its final significant digit. 2. For 23 that final digit is the 3. 3. So the leaf is three. _Source: OpenStax Introductory Statistics 2e, Chapter 2, Descriptive Statistics._

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One value in a data set sits far away from all the others. That value is called an:

  1. Overload
  2. Outlier
  3. Overlap
  4. Overlay
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Correct answer: B. Outlier

1. The rest of the data sits in a clear pattern. 2. This observation does not fit that pattern at all. 3. It is an outlier. _Source: OpenStax Introductory Statistics 2e, Chapter 2, Descriptive Statistics._

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A researcher has 400 measurements to display. The recommended graph for a set that large is a:

  1. Histogram
  2. Hexagram
  3. Hologram
  4. Homogram
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Correct answer: A. Histogram

1. A stemplot works best when data sets are small. 2. A hundred values or more calls for a different display. 3. The recommended graph is a histogram. _Source: OpenStax Introductory Statistics 2e, Chapter 2, Descriptive Statistics._

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