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Statistics and Probability

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

Data Collection and Sampling

Subtopic

Data Collection and Sampling under Statistics and Probability for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following would produce continuous data?

    A.

    The number of apples in a basket

    B.

    The number of students who walk to school

    C.

    The time taken to finish a test

    D.

    The number of pages in a notebook

  2. 2.

    Which of these is a way to ensure a sample is random?

    A.

    Asking only the first 1010 people you see

    B.

    Using a random number generator to pick ID numbers

    C.

    Asking people who look friendly

    D.

    Asking only people who are in the library

  3. 3.

    A survey asks: 'How many siblings do you have? 0,1,2,3+0, 1, 2, 3+.' This data is:

    A.

    Continuous

    B.

    Discrete

    C.

    Qualitative

    D.

    Primary and Continuous

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

Representing Data (Bar Charts, Pie Charts, Line Graphs, Stem-and-Leaf Diagrams)

Subtopic

Representing Data (Bar Charts, Pie Charts, Line Graphs, Stem-and-Leaf Diagrams) under Statistics and Probability for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A stem-and-leaf plot has values 41,44,4541, 44, 45. What is the stem?

    A.

    1, 4, 5

    B.

    4

    C.

    41

    D.

    10

  2. 2.

    In a line graph, time is usually plotted on which axis?

    A.

    X-axis

    B.

    Y-axis

    C.

    Z-axis

    D.

    The Legend

  3. 3.

    If a bar chart has categories 'A', 'B', 'C', and 'D' with frequencies 4,6,2,84, 6, 2, 8, which category represents the median frequency value if you order the categories by their frequency?

    A.

    A

    B.

    B

    C.

    C

    D.

    D

Download the worksheet for Statistics and Probability - Representing Data (Bar Charts, Pie Charts, Line Graphs, Stem-and-Leaf Diagrams) 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 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Find the mean of the following data: 11,13,1511, 13, 15.

    A.

    12

    B.

    13

    C.

    14

    D.

    15

  2. 2.

    A thermometer shows 50∘F,60∘F,50∘F,70∘F,50^\circ F, 60^\circ F, 50^\circ F, 70^\circ F, and 50∘F50^\circ F. What is the mode temperature?

    A.

    60∘F60^\circ F

    B.

    70∘F70^\circ F

    C.

    50∘F50^\circ F

    D.

    55∘F55^\circ F

  3. 3.

    Find the median of the data: 6,1,8,3,56, 1, 8, 3, 5.

    A.

    3

    B.

    5

    C.

    6

    D.

    8

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

Measures of Spread (Range)

Subtopic

Measures of Spread (Range) under Statistics and Probability for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the range of the following decimal sequence: {1.1,2.2,3.3,4.4,5.5}\{1.1, 2.2, 3.3, 4.4, 5.5\}?

    A.

    4.44.4

    B.

    5.55.5

    C.

    3.33.3

    D.

    1.11.1

  2. 2.

    A person recorded their daily steps as: {8000,12000,7500,10000}\{8000, 12000, 7500, 10000\}. What is the range of steps?

    A.

    40004000

    B.

    25002500

    C.

    45004500

    D.

    50005000

  3. 3.

    Find the range of the data set: {77,88,99,66}\{77, 88, 99, 66\}.

    A.

    2222

    B.

    4444

    C.

    3333

    D.

    1111

Download the worksheet for Statistics and Probability - Measures of Spread (Range) to practice offline. It includes additional chapter-level practice questions.

Theoretical and Experimental Probability

Subtopic

Theoretical and Experimental Probability under Statistics and Probability for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A box contains 1010 red cards and 1010 black cards. If you draw one card, what is the probability it is red?

    A.

    110\frac{1}{10}

    B.

    11

    C.

    0.50.5

    D.

    0.20.2

  2. 2.

    What is the probability of picking a vowel from the word 'SKY'?

    A.

    11

    B.

    0.50.5

    C.

    00

    D.

    13\frac{1}{3}

  3. 3.

    A letter is chosen from 'SUCCESS'. What is the probability of picking the letter 'S'?

    A.

    17\frac{1}{7}

    B.

    27\frac{2}{7}

    C.

    37\frac{3}{7}

    D.

    47\frac{4}{7}

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

Sample Space Diagrams for Single Events

Subtopic

Sample Space Diagrams for Single Events under Statistics and Probability for Grade 7 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A piece of fruit is chosen at random from a bowl containing only Apples and Bananas. What is the sample space SS?

    A.

    S={Apple,Banana}S = \{Apple, Banana\}

    B.

    S={Apple,Orange,Banana}S = \{Apple, Orange, Banana\}

    C.

    S={Fruit}S = \{Fruit\}

    D.

    S={A,B,C}S = \{A, B, C\}

  2. 2.

    A day of the week with the letter 'r' in its name is chosen at random. What is the sample space SS?

    A.

    S={Thursday,Friday,Saturday}S = \{Thursday, Friday, Saturday\}

    B.

    S={Tuesday,Thursday,Friday,Saturday}S = \{Tuesday, Thursday, Friday, Saturday\}

    C.

    S={Monday,Tuesday,Wednesday,Sunday}S = \{Monday, Tuesday, Wednesday, Sunday\}

    D.

    S={Tuesday,Thursday,Friday}S = \{Tuesday, Thursday, Friday\}

  3. 3.

    A prime number less than 66 is chosen from the positive integers. What is the sample space SS?

    A.

    S={2,3,5}S = \{2, 3, 5\}

    B.

    S={1,2,3,5}S = \{1, 2, 3, 5\}

    C.

    S={2,3,4,5}S = \{2, 3, 4, 5\}

    D.

    S={3,5}S = \{3, 5\}

Download the worksheet for Statistics and Probability - Sample Space Diagrams for Single Events to practice offline. It includes additional chapter-level practice questions.