Question Text
Question 1 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c09273b230584979a63.PNG' />
The above distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs 18. Find the missing frequency $f$.
Question 3 :
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The above given frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median.
Question 4 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0b273b230584979a65.PNG' />
A class teacher has the following absentee record of 40 students of a class for the whole term. Find the mean number of days a student was absent.
Question 5 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1a273b230584979a77.PNG' />
A life insurance agent found the above data for distribution of ages of 100 policy holders. Calculate the median age, if policies are given only to persons having age 18 years onwards but less than 60 year.
Question 6 :
If number of observations(n) is odd, then median equals _______ observation?
Question 7 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c07273b230584979a60.PNG' />
The table above shows the daily expenditure on food of 25 households in a locality. Find the mean daily expenditure on food by a suitable method
Question 8 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c0e273b230584979a68.PNG' />
The above data gives the information on the observed lifetimes (in hours) of 225 electrical components. Determine the modal lifetimes of the components.
Question 9 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19c1c273b230584979a79.PNG' />
If the median of the distribution given above is 28.5, find the values of x and y.
Question 10 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19bfd273b230584979a55.PNG' />
The table above gives the percentage distribution of female teachers in the primary schools of rural areas of various states and union territories (U.T.) of India. Find the mean percentage of female teachers.