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Statistics

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

Mean of Grouped Data (Direct and Assumed Mean Method)

Subtopic

Mean of Grouped Data (Direct and Assumed Mean Method) under Statistics for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Find the total frequency for the data: 10−2010-20 (5), 20−3020-30 (12), 30−4030-40 (3).

    A.

    17

    B.

    15

    C.

    20

    D.

    30

  2. 2.

    What is the lower limit of the class 250−300250 - 300?

    A.

    250

    B.

    275

    C.

    300

    D.

    50

  3. 3.

    If xi=50x_i = 50 and di=10d_i = 10, find the assumed mean aa.

    A.

    60

    B.

    40

    C.

    500

    D.

    5

Download the worksheet for Statistics - Mean of Grouped Data (Direct and Assumed Mean Method) to practice offline. It includes additional chapter-level practice questions.

Mode of Grouped Data

Subtopic

Mode of Grouped Data under Statistics for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Identify hh for the data: 20−30,30−40,40−5020-30, 30-40, 40-50.

    A.

    55

    B.

    1010

    C.

    1515

    D.

    2020

  2. 2.

    In the mode formula, if f0f_0 and f2f_2 are both zero, the mode becomes:

    A.

    l+h/2l + h/2

    B.

    l+hl + h

    C.

    ll

    D.

    l+2hl + 2h

  3. 3.

    If class intervals are 0−100,100−200,200−3000-100, 100-200, 200-300 with frequencies 40,60,3040, 60, 30, identify the modal class.

    A.

    0−1000-100

    B.

    100−200100-200

    C.

    200−300200-300

    D.

    None of these

Download the worksheet for Statistics - Mode of Grouped Data to practice offline. It includes additional chapter-level practice questions.

Median of Grouped Data

Subtopic

Median of Grouped Data under Statistics for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    When calculating median for grouped data, the classes must be:

    A.

    Discrete

    B.

    Continuous

    C.

    Open ended

    D.

    Unequal

  2. 2.

    If n=30n=30, cfcf of the class preceding the median class is 12, ff of the median class is 6, l=20l=20, and h=5h=5, the median is:

    A.

    22.5

    B.

    25

    C.

    23.5

    D.

    21.5

  3. 3.

    If the median class is 0-10, what is the value of ll?

    A.

    10

    B.

    5

    C.

    0

    D.

    1

Download the worksheet for Statistics - Median of Grouped Data to practice offline. It includes additional chapter-level practice questions.