Data Handling - Class 7 Maths Free MCQ Test with solutions

Test: Data Handling - Question 1

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

A.
Range
B.
Raw data
C.
Interval
D.
Frequency

Detailed Solution: Question 1

Explanation of Terms:

Frequency: The count of how many times a specific data point or value appears in a dataset. For example, if the number 5 appears 10 times in a dataset, the frequency of the number 5 is 10.
Range: The difference between the highest and lowest values in a dataset. For example, if the highest value is 20 and the lowest is 5, the range is 20 - 5 = 15.
Raw Data: The original, unprocessed data collected from observations or measurements before any analysis or summary is done.
Interval: In statistics, intervals are ranges of values within which data points fall. For example, if data is grouped into intervals like 10-20, 21-30, etc., each interval represents a range of values.

So, frequency is the term used to describe how many times a particular observation appears in a dataset.

Test: Data Handling - Question 2

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

A.
lowest observation
B.
highest observation
C.
frequency
D.
range

Detailed Solution: Question 2

The highest observation is the largest quantity in the interval. So 80 is the highest observation.

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Test: Data Handling - Question 3

The median of marks of class 95 - 100 is

A.
100
B.
95.5
C.
97.5
D.
95

Detailed Solution: Question 3

Median is the midpoint of the upper and lower limits.
So for the given problem; the median is
[(95+100)÷2] = 97.5
Thus class mark is 97.5

So option C is the correct answer.

Test: Data Handling - Question 4

The difference between the highest and lowest observation is called

A.
group
B.
range
C.
class interval
D.
class mark

Detailed Solution: Question 4

The difference between the highest and lowest observation of a class interval is called the range.

Test: Data Handling - Question 5

The median of distribution 9, 3, 4, 7, 5, 1, 8 is:

A.
4
B.
5
C.
1
D.
9

Detailed Solution: Question 5

Arranging the terms in ascending order 1, 3, 4, 5, 7, 8, 9

The median is the middle observation.

Therefore 5 is the median.

Test: Data Handling - 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

A.
28 kg
B.
30 kg
C.
26 Kg
D.
27 Kg

Detailed Solution: Question 6

Mean = Sum of mass weights / Total number of weighs

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

= 26

Test: Data Handling - 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.

A.
39 pounds
B.
35 pounds
C.
37 pounds
D.
none of these

Detailed Solution: Question 7

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.

Test: Data Handling - 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

A.
60
B.
67
C.
66
D.
None of these

Detailed Solution: Question 8

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.

Test: Data Handling - Question 9

Which student scored the highest marks?

A.
Meenu
B.
Vimla
C.
Apala
D.
Saroj

Detailed Solution: Question 9

Based on the data provided, Apala scored the highest marks with a total of 600.

Test: Data Handling - Question 10

The number of tourists visiting a historical place in a week is shown in the following table:
The mean of the number of tourists visiting on all days is

A.
65
B.
160
C.
98
D.
92

Detailed Solution: Question 10

Mean = (65 + 72 + 98 + 84 + 60 + 108 + 160) ÷ 7
= 647 ÷ 7 ≈ 92.43

So the mean is about 92 → d) 92.

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