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Statistics and Probability

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

Data Handling and Organization

Subtopic

Data Handling and Organization under Statistics and Probability for Grade 8 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following is secondary data?

    A.

    Results from your own experiment

    B.

    Information from a census report

    C.

    Answers from a questionnaire you distributed

    D.

    Observations you made in the park

  2. 2.

    In a probability scale from 00 to 11, where would 'an even chance' be located?

    A.

    00

    B.

    0.250.25

    C.

    0.50.5

    D.

    11

  3. 3.

    What is the mode of this data set: 2,8,3,8,2,8,42, 8, 3, 8, 2, 8, 4?

    A.

    22

    B.

    33

    C.

    44

    D.

    88

Download the worksheet for Statistics and Probability - Data Handling and Organization to practice offline. It includes additional chapter-level practice questions.

Graphical Representation of Data (Bar Graphs, Histograms, Pie Charts)

Subtopic

Graphical Representation of Data (Bar Graphs, Histograms, Pie Charts) under Statistics and Probability for Grade 8 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    If a pie chart shows that 16\frac{1}{6} of the students prefer Oranges, what is the central angle?

    A.

    60∘60^\circ

    B.

    30∘30^\circ

    C.

    90∘90^\circ

    D.

    120∘120^\circ

  2. 2.

    In a histogram, if the class 20−3020-30 has a frequency of 10 and 30−4030-40 has a frequency of 10, which statement is true?

    A.

    The bars have different heights

    B.

    The bars have the same height

    C.

    The first bar is wider

    D.

    The second bar is wider

  3. 3.

    A bar graph shows the number of goals scored by 4 players: A(2), B(4), C(1), D(3). What is the total number of goals?

    A.

    10

    B.

    12

    C.

    8

    D.

    14

Download the worksheet for Statistics and Probability - Graphical Representation of Data (Bar Graphs, Histograms, Pie Charts) to practice offline. It includes additional chapter-level practice questions.

Measures of Central Tendency (Mean, Median, Mode)

Subtopic

Measures of Central Tendency (Mean, Median, Mode) under Statistics and Probability for Grade 8 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Calculate the mean of the integers: 2,4,92, 4, 9.

    A.

    44

    B.

    55

    C.

    66

    D.

    1515

  2. 2.

    Find the mode of the directions: North, South, East, North, North, West.

    A.

    North

    B.

    South

    C.

    East

    D.

    West

  3. 3.

    Four students run a race. Their times are 12s,14s,16s,18s12s, 14s, 16s, 18s. What is the mean time?

    A.

    14s14s

    B.

    15s15s

    C.

    16s16s

    D.

    17s17s

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

Introduction to Probability

Subtopic

Introduction to Probability under Statistics and Probability for Grade 8 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    There are 100 tickets in a raffle, and 5 of them are winning tickets. What is the probability of choosing a winning ticket?

    A.

    0.50.5

    B.

    0.050.05

    C.

    0.0050.005

    D.

    55

  2. 2.

    A spinner has 4 equal sectors: Yellow, Blue, Red, and Green. What is the probability of landing on either Yellow or Blue?

    A.

    14\frac{1}{4}

    B.

    12\frac{1}{2}

    C.

    34\frac{3}{4}

    D.

    11

  3. 3.

    A number is chosen at random from 1 to 20. What is the probability that the number ends in the digit 5?

    A.

    120\frac{1}{20}

    B.

    220\frac{2}{20}

    C.

    520\frac{5}{20}

    D.

    420\frac{4}{20}

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

Calculating Probability of Events

Subtopic

Calculating Probability of Events under Statistics and Probability for Grade 8 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    In a bag of 2525 sweets, 55 are lemon flavored. What is the probability of picking a lemon sweet?

    A.

    5%5\%

    B.

    10%10\%

    C.

    20%20\%

    D.

    25%25\%

  2. 2.

    A box has 2020 cards numbered 11 to 2020. What is the probability of picking the number 1313?

    A.

    120\frac{1}{20}

    B.

    1320\frac{13}{20}

    C.

    110\frac{1}{10}

    D.

    12\frac{1}{2}

  3. 3.

    If you flip a coin, what is the probability of getting heads, expressed as a decimal?

    A.

    0.250.25

    B.

    0.50.5

    C.

    0.750.75

    D.

    1.01.0

Download the worksheet for Statistics and Probability - Calculating Probability of Events to practice offline. It includes additional chapter-level practice questions.

Statistics and Probability - Grade 8 Maths (IB) | Krit.club