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Statistics and Probability

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

Planning and collecting data

Subtopic

Planning and collecting data under Statistics and Probability for Grade 7 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of these is a definition of 'Secondary Data'?

    A.

    Data collected first-hand by the researcher

    B.

    Data that has been collected by someone else previously

    C.

    Data that only uses numbers

    D.

    Data that is always inaccurate

  2. 2.

    A teacher puts all the students' names into a hat and draws 55 names. What kind of sampling is this?

    A.

    Systematic sampling

    B.

    Biased sampling

    C.

    Random sampling

    D.

    Convenience sampling

  3. 3.

    What is the primary reason for grouping data into classes (intervals) in a frequency table?

    A.

    To make the data harder to read

    B.

    To handle large amounts of data with many different values

    C.

    To change the data from quantitative to qualitative

    D.

    To remove any bias from the survey

Download the worksheet for Statistics and Probability - Planning and collecting data to practice offline. It includes additional chapter-level practice questions.

Processing and presenting data (Pie charts, Bar charts)

Subtopic

Processing and presenting data (Pie charts, Bar charts) under Statistics and Probability for Grade 7 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In a pie chart, a sector represents 1/81/8 of the total. What is its angle?

    A.

    30∘30^{\circ}

    B.

    45∘45^{\circ}

    C.

    50∘50^{\circ}

    D.

    60∘60^{\circ}

  2. 2.

    A bar chart shows homework hours: 11 hour (55 students), 22 hours (1010 students), 33 hours (33 students). How many students were surveyed?

    A.

    33

    B.

    66

    C.

    1515

    D.

    1818

  3. 3.

    If a pie chart sector is 10∘10^{\circ}, how many such sectors would it take to fill the whole chart?

    A.

    1010

    B.

    2424

    C.

    3636

    D.

    360360

Download the worksheet for Statistics and Probability - Processing and presenting data (Pie charts, Bar charts) to practice offline. It includes additional chapter-level practice questions.

Interpreting and discussing results

Subtopic

Interpreting and discussing results under Statistics and Probability for Grade 7 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If you pick a day of the week at random, what is the probability it starts with the letter 'S'?

    A.

    17\frac{1}{7}

    B.

    27\frac{2}{7}

    C.

    37\frac{3}{7}

    D.

    57\frac{5}{7}

  2. 2.

    A pictogram uses a 'half-symbol' to represent 33 people. How many people does a full symbol represent?

    A.

    33

    B.

    1.51.5

    C.

    66

    D.

    99

  3. 3.

    What is the median of 10,20,30,4010, 20, 30, 40?

    A.

    2020

    B.

    2525

    C.

    3030

    D.

    4040

Download the worksheet for Statistics and Probability - Interpreting and discussing results to practice offline. It includes additional chapter-level practice questions.

Statistical measures (Mean, Median, Mode, Range)

Subtopic

Statistical measures (Mean, Median, Mode, Range) under Statistics and Probability for Grade 7 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Determine the range of 60,1060, 10, and 8080.

    A.

    2020

    B.

    5050

    C.

    7070

    D.

    8080

  2. 2.

    What is the mean of 12,1412, 14, and 1616?

    A.

    1212

    B.

    1313

    C.

    1414

    D.

    1515

  3. 3.

    Which number is the mode in this list: 1,2,3,4,5,11, 2, 3, 4, 5, 1?

    A.

    11

    B.

    22

    C.

    33

    D.

    55

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

The outcomes of random events (Probability)

Subtopic

The outcomes of random events (Probability) under Statistics and Probability for Grade 7 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the probability of picking a letter that is NOT a vowel from the word 'CAT'?

    A.

    13\frac{1}{3}

    B.

    23\frac{2}{3}

    C.

    11

    D.

    00

  2. 2.

    A bag contains 9 black marbles and 1 white marble. How would you describe the probability of picking a black marble?

    A.

    Impossible

    B.

    Unlikely

    C.

    Likely

    D.

    Certain

  3. 3.

    If a number is chosen from 1 to 20, what is the probability it is a multiple of 5?

    A.

    120\frac{1}{20}

    B.

    420\frac{4}{20}

    C.

    520\frac{5}{20}

    D.

    220\frac{2}{20}

Download the worksheet for Statistics and Probability - The outcomes of random events (Probability) to practice offline. It includes additional chapter-level practice questions.

Statistics and Probability - Grade 7 Maths (IGCSE) | Krit.club