Question Text
Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c04273b230584979a5d.PNG' />
Consider the above distribution of daily wages of 50 workers of a factory. Find the mean daily wages of the workers of the factory by using an appropriate method.
Question 2 :
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The above given frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the mode.
Question 3 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c09273b230584979a62.PNG' />
A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the above given data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house.
Question 4 :
<img style='object-fit:contain' src='61b19ae3273b230584979944' />
If median of the distribution given below is 28.5, then find the values of x and y.
Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c13273b230584979a6e.PNG' />
The above distribution gives the state-wise teacher-student ratio in higher secondary schools of India. Find the mode of this data.
Question 6 :
<img style='object-fit:contain' src='61b19ab9273b23058497993f' />
The above data gives the infomation on the observed lifetimes (in hours) of 225 electrical bulbs. Determine the modal lifetime of the components.
Question 7 :
The class whose cumulative frequency is greater than (and nearest to) $\frac{n}{2}$ is called median class. TRUE OR FALSE ? (n is number of observations)
Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c00273b230584979a58.PNG' />
The median of the above data is 525. Find the values of x and y, if the total frequency is 100.
Question 9 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c10273b230584979a6b.PNG' />
The above distribution gives the state-wise teacher-student ratio in higher secondary schools of India. Find the mean of this data.
Question 10 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c06273b230584979a5f.PNG' />
In a retail market, fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying number of mangoes. The data was the distribution of mangoes according to the number of boxes. Find the mean number of mangoes kept in a packing box.