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Statistics and Probability

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Data Collection and Classification

Subtopic

Data Collection and Classification under Statistics and Probability for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Data that describes a numeric amount or count is called:

    A.

    Qualitative

    B.

    Categorical

    C.

    Quantitative

    D.

    Nominal

  2. 2.

    The number of words on this page is:

    A.

    Discrete data

    B.

    Continuous data

    C.

    Qualitative data

    D.

    Secondary data

  3. 3.

    If you use a stopwatch to record the time taken for a chemical reaction to occur, the data is:

    A.

    Discrete

    B.

    Continuous

    C.

    Qualitative

    D.

    Secondary

Download the worksheet for Statistics and Probability - Data Collection and Classification to practice offline. It includes additional chapter-level practice questions.

Mean, Median, Mode, and Range

Subtopic

Mean, Median, Mode, and Range under Statistics and Probability for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Calculate the range of these values: 19,11,15,20,1219, 11, 15, 20, 12.

    A.

    7

    B.

    8

    C.

    9

    D.

    10

  2. 2.

    What is the mean of 4,4,4,84, 4, 4, 8?

    A.

    4

    B.

    5

    C.

    6

    D.

    8

  3. 3.

    Find the mode of the following set: 2,4,6,8,22, 4, 6, 8, 2.

    A.

    2

    B.

    4

    C.

    6

    D.

    8

Download the worksheet for Statistics and Probability - Mean, Median, Mode, and Range to practice offline. It includes additional chapter-level practice questions.

Statistical Diagrams (Bar Charts, Pie Charts, Histograms)

Subtopic

Statistical Diagrams (Bar Charts, Pie Charts, Histograms) under Statistics and Probability for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A pie chart shows that 60∘60^\circ represents 1515 students. How many students does the whole pie chart represent?

    A.

    6060

    B.

    9090

    C.

    120120

    D.

    360360

  2. 2.

    A bar chart shows the number of sunny days in four weeks: Week 1 (33), Week 2 (55), Week 3 (22), Week 4 (66). What is the mean number of sunny days per week?

    A.

    33

    B.

    44

    C.

    55

    D.

    1616

  3. 3.

    In a pie chart, a 216∘216^\circ sector represents what fraction of the whole?

    A.

    25\frac{2}{5}

    B.

    35\frac{3}{5}

    C.

    34\frac{3}{4}

    D.

    12\frac{1}{2}

Download the worksheet for Statistics and Probability - Statistical Diagrams (Bar Charts, Pie Charts, Histograms) to practice offline. It includes additional chapter-level practice questions.

Probability of Single and Independent Events

Subtopic

Probability of Single and Independent Events under Statistics and Probability for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A spinner is divided into 6 equal sections numbered 1 to 6. What is the probability of landing on a composite number?

    A.

    16\frac{1}{6}

    B.

    12\frac{1}{2}

    C.

    13\frac{1}{3}

    D.

    23\frac{2}{3}

  2. 2.

    Two independent events X and Y have probabilities P(X)=12P(X) = \frac{1}{2} and P(Y)=13P(Y) = \frac{1}{3}. What is the probability of both events occurring?

    A.

    56\frac{5}{6}

    B.

    16\frac{1}{6}

    C.

    15\frac{1}{5}

    D.

    23\frac{2}{3}

  3. 3.

    In a standard deck of cards, what is the probability of picking a red card (Heart or Diamond)?

    A.

    14\frac{1}{4}

    B.

    12\frac{1}{2}

    C.

    34\frac{3}{4}

    D.

    113\frac{1}{13}

Download the worksheet for Statistics and Probability - Probability of Single and Independent Events to practice offline. It includes additional chapter-level practice questions.

Scatter Diagrams and Correlation

Subtopic

Scatter Diagrams and Correlation under Statistics and Probability for Grade 8 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these is a key feature to look for in a scatter diagram to determine the type of correlation?

    A.

    The color of the points

    B.

    The general slope or trend of the points

    C.

    The number of points on the yy-axis only

    D.

    The size of the individual points

  2. 2.

    What is the correlation between the number of hours a candle has been burning and its height?

    A.

    Positive

    B.

    Negative

    C.

    None

    D.

    Strong positive

  3. 3.

    If we use a line of best fit to predict a value, and the correlation is weak, the prediction is:

    A.

    Highly reliable

    B.

    Less reliable

    C.

    Always correct

    D.

    Impossible to make

Download the worksheet for Statistics and Probability - Scatter Diagrams and Correlation to practice offline. It includes additional chapter-level practice questions.

Statistics and Probability - Grade 8 Maths (IGCSE) | Krit.club