krit.club logo

Statistics

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

Measures of Dispersion: Range, Mean Deviation

Subtopic

Measures of Dispersion: Range, Mean Deviation under Statistics for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Find the range of the observations: 100,150,200,250,300100, 150, 200, 250, 300.

    A.

    150

    B.

    100

    C.

    250

    D.

    200

  2. 2.

    Calculate the mean deviation about the mean for the numbers 1,2,31, 2, 3.

    A.

    0.67

    B.

    1.0

    C.

    0.5

    D.

    1.5

  3. 3.

    What is the range of the first five multiples of 1111?

    A.

    55

    B.

    44

    C.

    33

    D.

    11

Download the worksheet for Statistics - Measures of Dispersion: Range, Mean Deviation to practice offline. It includes additional chapter-level practice questions.

Variance and Standard Deviation

Subtopic

Variance and Standard Deviation under Statistics for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Calculate the variance of the set {0,10}\{0, 10\}.

    A.

    2525

    B.

    5050

    C.

    100100

    D.

    55

  2. 2.

    Coefficient of variation is a:

    A.

    Absolute measure

    B.

    Relative measure

    C.

    Geometric measure

    D.

    None of these

  3. 3.

    If for a sample of 1010 observations, ∑(xi−xˉ)2=0\sum (x_i - \bar{x})^2 = 0, it implies:

    A.

    Mean is 0

    B.

    All observations are 0

    C.

    All observations are equal

    D.

    Variance is 10

Download the worksheet for Statistics - Variance and Standard Deviation to practice offline. It includes additional chapter-level practice questions.

Analysis of Frequency Distributions

Subtopic

Analysis of Frequency Distributions under Statistics for Grade 11 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Coefficient of Variation is expressed as a:

    A.

    Ratio

    B.

    Percentage

    C.

    Natural number

    D.

    Fraction

  2. 2.

    If the mean is 160160 and the standard deviation is 4040, find the C.V.C.V.

    A.

    4%4\%

    B.

    25%25\%

    C.

    40%40\%

    D.

    16%16\%

  3. 3.

    When comparing two distributions with the same arithmetic mean, the one with the smaller variance is considered to be more:

    A.

    Variable

    B.

    Consistent

    C.

    Dispersed

    D.

    Unstable

Download the worksheet for Statistics - Analysis of Frequency Distributions to practice offline. It includes additional chapter-level practice questions.