0-20, 21-41, 41-60 कैसे वर्ग-अंतराल है?

Ex-1 Q.41-60

Draw a histogram for the following {:("Class interval ", 11-20,21-30,31-40,41-50,51-60),(" Frequency "," "5, " "8, " "13 , " "10, " "6):}

Construct a cumulative frequency distribution table from the following frequency table : {:( " C.I" , ,"Frequency "),( 11-20 , , 15),(21-30, ,21),(31-40, ,26),(41-50,, 18),(51-60,,13),(61-70,,15):}

Question 21 to 41

Solve : 42x^2-41x-20 = 0 .

If HE = 41, COMA=76 then HERE will be equal to: यदि HE = 41, COMA = 76 है तो HERE के बराबर होगा:

Caculate median of the following distribution of data : {:("Class Interval",1-10,11-20,21-30,31-40,41-50),("Frequency"," "4," "12," "20," "9," "5):}