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This mock test of Test: Data Handling - 1 for Class 7 helps you for every Class 7 entrance exam.
This contains 10 Multiple Choice Questions for Class 7 Test: Data Handling - 1 (mcq) to study with solutions a complete question bank.
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QUESTION: 1

The number of times an observation occurs in a data is called its

Solution:

**Data** available in an unorganised form are **called** raw **data**. The **number of times** a particular **observation occurs** in a given **data is called its** frequency.

QUESTION: 2

In the class- interval 70-80, 80 is the

Solution:

Upper limit is the largest quantity in the interval. So 80 is the upper limit

QUESTION: 3

The class mark of class 95- 100 is

Solution:

Class mark is the midpoint of the upper and lower limits.

so for the given problem; the class mark is

[(95+100)÷2] = 97.5

Thus class mark is 97.5

So option C is the correct answer.

QUESTION: 4

The difference between the upper and lower limit is called

Solution:

The difference between the upper and lower limit of a class interval is called the class size of the class interval.

QUESTION: 5

The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 and of girls is 40 kg. Therefore, the number of boys is:

Solution:

Let number of boys are x and then number of girls = (100-x).

Thus,

50x+(100-x)*40 = 46*100

→ x = 60.

Number of boys = 60.

QUESTION: 6

Find the mean weight of the data set shown. 5 kg, 43 kg, 18 kg, 26 kg, 28 kg, 46 kg, 41 kg, 1 kg

Solution:

Mean = Sum of mass weights / Total number of weighs

= 5 + 43 + 18 + 26 + 28 + 46 + 41 + 1 /8

= 26

So option C is correct answer.

QUESTION: 7

A kennel can accommodate 12 dogs that weigh (in pounds) 6, 14, 23, 17, 19, 27, 39, 7, 33, 4, 11, and 13. Find the range of their weights.

Solution:

The *Range* is the difference between the lowest and highest values.

Here the highest value is 39 and the lowest value is 4

So Range = Highest Value - Lowest Value

= 39 - 4 = 35

So option B is the correct answer.

QUESTION: 8

Find the mode for the data set, which shows the heights (in inches) of 10 students of Piyush’s class. 65, 60, 64, 61, 66, 67, 67, 67, 62, 77

Solution:

the *mode* of a set of numbers is the **number that appears most often in the set**.

Since the number 67 appears the most . So the mode of the given data is 67.

So option B is the correct answer.

QUESTION: 9

Following frequency distribution table shows marks (out of 50) obtained in English by 45 students of class VII. What is the size of class intervals?

Solution:

QUESTION: 10

Which class has the highest frequency?

Solution:

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