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Statistics

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

Presentation of Data (Frequency Distribution)

Subtopic

Presentation of Data (Frequency Distribution) under Statistics for Grade 9 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the class mark for the interval 10−3010 - 30?

    A.

    1515

    B.

    2020

    C.

    2525

    D.

    4040

  2. 2.

    Which of the following describes 'raw data'?

    A.

    Data in an array

    B.

    Data in a table

    C.

    Data in its original form as collected

    D.

    Data represented by a graph

  3. 3.

    If the class size is 55 and the upper limit of a class is 2020, what is the lower limit?

    A.

    1010

    B.

    1515

    C.

    2525

    D.

    12.512.5

Download the worksheet for Statistics - Presentation of Data (Frequency Distribution) to practice offline. It includes additional chapter-level practice questions.

Graphical Representation (Histograms, Frequency Polygon, Ogive)

Subtopic

Graphical Representation (Histograms, Frequency Polygon, Ogive) under Statistics for Grade 9 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the class size of the interval 0.5−9.50.5 - 9.5?

    A.

    1010

    B.

    99

    C.

    9.59.5

    D.

    0.50.5

  2. 2.

    A graphical representation consisting of a set of connected line segments joining the points (x,f)(x, f), where xx is the class mark and ff is the frequency, is a:

    A.

    Histogram

    B.

    Ogive

    C.

    Frequency Polygon

    D.

    Pie Chart

  3. 3.

    If the class intervals are not continuous, what must be done before drawing a histogram?

    A.

    Find the mid-points

    B.

    Make them continuous by adjusting boundaries

    C.

    Calculate the cumulative frequency

    D.

    Calculate the mean

Download the worksheet for Statistics - Graphical Representation (Histograms, Frequency Polygon, Ogive) to practice offline. It includes additional chapter-level practice questions.

Measures of Central Tendency (Mean and Median of ungrouped data)

Subtopic

Measures of Central Tendency (Mean and Median of ungrouped data) under Statistics for Grade 9 ICSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Calculate the mean of the first four odd natural numbers.

    A.

    33

    B.

    44

    C.

    55

    D.

    66

  2. 2.

    Find the median of the numbers 8,1,6,2,5,4,78, 1, 6, 2, 5, 4, 7.

    A.

    44

    B.

    55

    C.

    66

    D.

    22

  3. 3.

    If the mean of 2,4,2, 4, and xx is 66, find xx.

    A.

    1010

    B.

    1212

    C.

    1414

    D.

    1616

Download the worksheet for Statistics - Measures of Central Tendency (Mean and Median of ungrouped data) to practice offline. It includes additional chapter-level practice questions.