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प्रश्न
Which of the following data is not primary?
पर्याय
By visiting a certain class, gathering information about attendance of students.
By actual visit to homes, to find number of family members.
To get information regarding plantation of soyabean done by each farmer from the village Talathi.
Review the cleanliness status of canals by actually visiting them.
उत्तर
To get information regarding plantation of soyabean done by each farmer from the village Talathi.
Explanation:
- By visiting a certain class, gathering information about attendence of students. Since, the information related to the attendence has been already recorded. So, it is primary.
- By actual visit to homes, to find number of family members. Since, the information is collected by visiting. So, it is a primary data.
- To get information regarding plantation of soyabean done by each farmer from the village Talathi. Since, the information is collected by each member. So, it is not primary data.
- Review the cleanliness status of canals by actually visiting them. Since, this information is gathered by visiting. So, it is a primary data.
APPEARS IN
संबंधित प्रश्न
Classify the given data as primary or secondary data.
In our day to day life, we can collect the following data.
1. Number of females per 1000 males in various states of our country
2. Weights of students of our class
3. Production of wheat in the last 10 years in our country
4. Number of plants in our locality
5. Rainfall in our city in the last 10 years
Why do we group data?
The ages of ten students of a group are given below. The ages have been recorded in years
and months:
8 – 6, 9 – 0, 8 – 4, 9 – 3, 7 – 8, 8 – 11,8 – 7, 9 – 2, 7 – 10, 8 – 8
(i) What is the lowest age?
(ii) What is the highest age?
(iii) Determine the range?
The monthly pocket money of six friends is given below: Rs. 45, Rs. 30, Rs. 40, Rs. 50, Rs.
25, Rs. 45.
(i) What is the highest pocket money?
(ii) What is the lowest pocket money?
(iii) What is the range?
(iv) Arrange the amounts of pocket money in ascending order.
Write the class-size in each of the following:
(i) 0 – 4, 5 – 9, 10 – 14
(ii) 10 – 19, 20 – 29, 30 – 39
(iii) 100 – 120, 120 – 140, 160 – 180
(iv) 0 – 0.25, 0.25 – 0.50, 0.50 – 0.75
(v) 5 – 5.01, 5.01 − 5.02, 5.02 – 5.03
The final marks in mathematics of 30 students are as follows:
53, 61, 48, 60, 78, 68, 55, 100,67,90
75,88,77,37,84,58,60,48,62,56
44, 58, 52, 64, 98, 59, 70, 39, 50, 60
(i) Arrange these marks in the ascending order, 30 to 39 one group, 40 to 49 second group etc.
Now answer the following:
(ii) What is the highest score?
(iii) What is the lowest score?
(iv) What is the range?
(v) If 40 is the pass mark how many have failed?
(vi) How many have scored 75 or more?
(vii) Which observations between 50 and 60 have not actually appeared?
(viii) How many have scored less than 50?
The class size of a distribution is 25 and the first class-interval is 200-224. There are seven
class-intervals.
(i) Write the class-intervals.
(ii) Write the class-marks of each interval.
Classify following information as primary or secondary data.
Information of attendance of every student collected by visiting every class in a school.
Classify following information as primary or secondary data.
In the village Nandpur, the information collected from every house regarding students not attending school.
Classify following information as primary or secondary data.
For science project, information of trees gathered by visiting a forest.
