UPSKILL MATH PLUS

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The number of people with different age groups visiting the exhibition is given below:
 
AgeNumber of people
Less than 1010
Less than 2031
Less than 3068
Less than 4085
Less than 50102
 
1. The median class is
 
2. The modal class is
 
3. The mean of the upper limits of the modal and median class is .
 
4. The sum of the lower limits of the median and modal class is .
 
5. The abscissa of the point of intersection of the less than type and of the more than type cumulative frequency curves of a grouped data gives its .