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Statistics

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

Mean, Median, Mode, and Range

Subtopic

Mean, Median, Mode, and Range under Statistics for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Identify the range of the data set: 100,105,95,110100, 105, 95, 110.

    A.

    5

    B.

    10

    C.

    15

    D.

    20

  2. 2.

    The ages of four children are 3,5,7,93, 5, 7, 9. What is their mean age?

    A.

    5

    B.

    6

    C.

    7

    D.

    8

  3. 3.

    Find the median of 10,20,30,4010, 20, 30, 40.

    A.

    20

    B.

    25

    C.

    30

    D.

    35

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

Histograms and frequency polygons

Subtopic

Histograms and frequency polygons under Statistics for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    For the interval 12.4<x≤12.812.4 < x \le 12.8, what is the class width?

    A.

    0.20.2

    B.

    0.40.4

    C.

    12.612.6

    D.

    25.225.2

  2. 2.

    Which of the following describes a symmetrical distribution in a frequency polygon?

    A.

    The left side is a mirror image of the right side

    B.

    The polygon only goes upwards

    C.

    The polygon is a flat horizontal line

    D.

    The tail is longer on the left

  3. 3.

    If the frequency of a class is 100100 and the frequency density is 22, what is the class width?

    A.

    0.020.02

    B.

    5050

    C.

    9898

    D.

    200200

Download the worksheet for Statistics - Histograms and frequency polygons to practice offline. It includes additional chapter-level practice questions.

Cumulative frequency and box plots

Subtopic

Cumulative frequency and box plots under Statistics for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In a cumulative frequency curve, the yy-axis represents:

    A.

    Frequency

    B.

    Class Midpoint

    C.

    Cumulative Frequency

    D.

    Upper Class Boundary

  2. 2.

    What is the range of a dataset where the box plot whiskers extend from 5 to 95?

    A.

    100

    B.

    90

    C.

    45

    D.

    50

  3. 3.

    If the total frequency is N=300N=300, how many data points are below the lower quartile?

    A.

    75

    B.

    150

    C.

    225

    D.

    100

Download the worksheet for Statistics - Cumulative frequency and box plots to practice offline. It includes additional chapter-level practice questions.

Scatter diagrams and correlation

Subtopic

Scatter diagrams and correlation under Statistics for Grade 11 IGCSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In a scatter diagram, 'bivariate' means there are how many variables?

    A.

    11

    B.

    22

    C.

    33

    D.

    44

  2. 2.

    Does correlation imply causation?

    A.

    Yes, always

    B.

    No, never

    C.

    Not necessarily

    D.

    Only if it is strong

  3. 3.

    If the mean of xx is 88 and the mean of yy is 1212, the line of best fit must pass through:

    A.

    (0,0)(0, 0)

    B.

    (12,8)(12, 8)

    C.

    (8,12)(8, 12)

    D.

    (20,20)(20, 20)

Download the worksheet for Statistics - Scatter diagrams and correlation to practice offline. It includes additional chapter-level practice questions.