Class 8 Practice – Level 1 – Data Handling

Total questions: 40

Which of the following is NOT a method of organizing data?

Topic: Organizing Data

Tabular form

Bar graph

Random arrangement

Frequency distribution

None

What is the first step in organizing data?

Topic: Organizing Data

Collecting data

Drawing graphs

Calculating mean

Finding probability

None

If you have a list of students' marks, what is the best way to organize it?

Topic: Organizing Data

Arrange the marks randomly

Write the marks in ascending or descending order

Create a bar graph directly

Draw a pie chart

None

What does the term "frequency" mean in data handling?

Topic: Organizing Data

The total number of observations

The difference between highest and lowest values

The number of times a particular observation occurs

The sum of all observations

None

How many classes should a frequency table typically have for better readability?

Topic: Organizing Data

Between 5 and 15

Only 2

Between 20 and 25

Any number

None

Which type of graph is most suitable for representing categorical data?

Topic: Graphical Representation of Data

Bar graph

Line graph

Histogram

Pie chart

None

In a bar graph, the width of each bar should be:

Topic: Graphical Representation of Data

Equal

Different

Proportional to the values

Based on the frequency

None

The x-axis in a graph typically represents:

Topic: Graphical Representation of Data

The dependent variable

The independent variable

Frequency

Mean

None

Which type of graph is used to represent continuous data?

Topic: Graphical Representation of Data

Histogram

Bar graph

Pie chart

Line graph

None

10.

What does a pie chart represent?

Topic: Graphical Representation of Data

The total number of observations

Frequency of each class

Proportions of data in different categories

Continuous data

None

11.

What is the "mean" of a dataset?

Topic: Measures of Central Tendency

The middle value of the dataset

The most frequently occurring value

The range of the data

The sum of all observations divided by the number of observations

None

12.

If a dataset is: $5, 7, 10, 5, 6$, what is the mean?

Topic: Measures of Central Tendency

$6$

$7$

$8$

$6.6$

None

13.

What is the mode of the dataset $2, 4, 4, 5, 6$?

Topic: Measures of Central Tendency

$4$

$5$

$6$

$2$

None

14.

What is the median of the dataset $3, 7, 2, 9, 5$?

Topic: Measures of Central Tendency

$6$

$7$

$5$

$9$

None

15.

Which of the following is NOT a measure of central tendency?

Topic: Measures of Central Tendency

Mean

Mode

Median

Range

None

16.

The range of a dataset is calculated as:

Topic: Measures of Central Tendency

The sum of all values divided by the number of values

The most frequently occurring value

The difference between the highest and lowest values

The middle value of the dataset

None

17.

What is the probability of getting a head when tossing a coin?

Topic: Probability

$0$

$0.5$

$1$

$2$

None

18.

The probability of an impossible event is:

Topic: Probability

$1$

$0.5$

$0$

$-1$

None

19.

The sum of probabilities of all possible outcomes of an event is:

Topic: Probability

$0$

$0.5$

$1$

Infinity

None

20.

What is the probability of rolling an even number on a fair six-sided die?

Topic: Probability

$\dfrac{1}{6}$

$\dfrac{1}{2}$

$\dfrac{1}{3}$

$1$

None

21.

In a bag containing 4 red balls and 6 blue balls, the probability of randomly picking a blue ball is:

Topic: Probability

$\dfrac{2}{5}$

$\dfrac{3}{5}$

$\dfrac{1}{2}$

$\dfrac{1}{6}$

None

22.

What is the probability of getting a number greater than $4$ when rolling a fair six-sided die?

Topic: Probability

$\dfrac{1}{2}$

$\dfrac{1}{3}$

$\dfrac{2}{3}$

$\dfrac{1}{6}$

None

23.

An event is said to be "certain" if its probability is:

Topic: Probability

$0$

$1$

$0.5$

$2$

None

24.

What is the probability of randomly selecting an ace from a standard deck of 52 cards?

Topic: Probability

$\dfrac{1}{13}$

$\dfrac{4}{52}$

$\dfrac{1}{52}$

$\dfrac{4}{13}$

None

25.

Which of the following is NOT true for a pie chart?

Topic: Graphical Representation of Data

It shows data as parts of a whole.

The total of all sectors equals $100%$.

It is suitable for comparing large amounts of data.

Each sector represents a category.

None

26.

Which graph is most suitable for representing trends over time?

Topic: Graphical Representation of Data

Bar graph

Line graph

Histogram

Pie chart

None

27.

In a histogram, the bars are:

Topic: Graphical Representation of Data

Separated

Connected with gaps

Connected without gaps

Of unequal widths

None

28.

What is represented on the y-axis in a bar graph?

Topic: Graphical Representation of Data

Categories

Time

Data values or frequency

Units

None

29.

In a double bar graph, the purpose is to:

Topic: Graphical Representation of Data

Show trends over time

Compare two sets of data

Represent percentages

Show the mean

None

30.

Which graph would you use to represent the marks of students in a class across five subjects?

Topic: Graphical Representation of Data

Line graph

Bar graph

Histogram

Pie chart

None

31.

If the mode of a dataset is $10$, it means:

Topic: Measures of Central Tendency

The sum of all data points is $10$.

$10$ is the average of the data.

$10$ occurs most frequently in the dataset.

The range of the data is $10$.

None

32.

The median of $4, 7, 1, 9, 5$ is:

Topic: Measures of Central Tendency

$5$

$6$

$7$

$4$

None

33.

If the mean of five numbers is $8$, what is their total sum?

Topic: Measures of Central Tendency

$8$

$40$

$48$

$32$

None

34.

For the data $3, 7, 3, 9, 3$, the mode is:

Topic: Measures of Central Tendency

$3$

$7$

$9$

$6$

None

35.

If the highest value in a dataset is $25$ and the lowest value is $5$, the range is:

Topic: Measures of Central Tendency

$30$

$20$

$10$

$5$

None

36.

What happens to the mean if you add $5$ to every value in the dataset?

Topic: Measures of Central Tendency

It remains unchanged.

It decreases by $5$.

It increases by $5$.

It doubles.

None

37.

The median of a dataset is:

Topic: Measures of Central Tendency

The mean of the data

The middle value when data is arranged in order

The most frequently occurring value

The difference between maximum and minimum values

None

38.

What is the mode of the dataset $12, 15, 14, 15, 18$?

Topic: Measures of Central Tendency

$12$

$15$

$14$

$18$

None

39.

What is the range of the dataset $2, 8, 5, 10, 7$?

Topic: Measures of Central Tendency

$6$

$8$

$10$

$9$

None

40.

The mean of $4, 6, 8, 10, 12$ is:

Topic: Measures of Central Tendency

$8$

$9$

$10$

$7$

None

1 out of 40

Time's up

Class 8 Practice – Level 1 – Data Handling

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