
Canada Grade 8 Math Collecting, organizing, and
Authored by Owen Nash
Mathematics
8th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A survey was conducted to find out the favourite sport of students in a school. The results are shown in the table below. What is the mode of the data? | Sport | Number of Students | |-----------|--------------------| | Soccer | 15 | | Basketball| 20 | | Hockey | 10 | | Volleyball| 20 |
Soccer
Basketball
Hockey
Volleyball
Answer explanation
The mode is the value that appears most frequently. In this survey, both Basketball and Volleyball have the highest count of 20 students. However, since Basketball is listed first, it is considered the mode.
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A class of 30 students was surveyed about their favourite ice cream flavour. The results were: 10 students liked chocolate, 12 liked vanilla, and 8 liked strawberry. What is the probability that a randomly selected student likes vanilla?
Answer explanation
To find the probability that a randomly selected student likes vanilla, divide the number of students who like vanilla (12) by the total number of students (30). Thus, P(Vanilla) = 12/30 = 2/5.
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is a primary source of data?
A textbook
A newspaper article
A survey you conducted
An online blog
Answer explanation
A survey you conducted is a primary source of data because it involves original data collection. In contrast, a textbook, newspaper article, and online blog are secondary sources that interpret or summarize existing information.
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
12
14
16
18
Answer explanation
To find x, set up the equation for the mean: (4 + 8 + 12 + x) / 4 = 10. Simplifying gives 24 + x = 40, so x = 16. Thus, the value of x is 16.
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A die is rolled once. What is the probability of rolling a number greater than 4?
Answer explanation
A die has 6 faces numbered 1 to 6. The numbers greater than 4 are 5 and 6, which are 2 outcomes. Therefore, the probability is \( \frac{2}{6} = \frac{1}{3} \). Thus, the correct answer is \( \frac{1}{3} \).
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following graphs is best for showing the distribution of a single categorical variable?
Line graph
Bar graph
Scatter plot
Histogram
Answer explanation
A bar graph is ideal for displaying the distribution of a single categorical variable, as it visually represents the frequency of each category. Other options like line graphs and scatter plots are better suited for continuous data.
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
A box contains 5 red, 3 blue, and 2 green marbles. What is the probability of drawing a blue marble?
Answer explanation
To find the probability of drawing a blue marble, divide the number of blue marbles (3) by the total number of marbles (10). Thus, the probability is \( \frac{3}{10} \), which is the correct answer.
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