निम्नलिखित श्रृंखला के माध्य की गणना करें: {:(मजदूरी दर (रु.) (से कम),10,20,30,40,50,60,70,8...

Calculate median of the following series : {:("Wage Rate (Rs.) (less than)",10,20,30,40,50,60,70,80),("Number of Waorkers",15,35,60,84,96,127,198,250):}

Range of data : 20,40,30,60,80,100,10,70 is

Range of data: 20,40,30,60,80,100,10,70 is:

Study the following Bar graph and answer the question. The Bar graph gives the annual rates of inflation in percentages for 1975 and 1987: निम्नलिखित बार-ग्राफ का अध्ययन करें और प्रश्नों का उत्तर दें। बार-ग्राफ में वर्ष 1975 से 1987 तक प्रतिशत में मुद्रा स्फीति की वार्षिक दर प्रतिशत में दी गई है : The change in rate of inflation was least in which of the following. मुद्रास्फीति के परिवर्तन की निम्नतम दर इन में से कहाँ थी?

The following table gives distributionn of marks secured by some stidents : {:("Wege Rate (Rs.)",10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Students"," "42," "38," "120," "84," "48," "36," "31):} Calculate the median marks secured by the students.

Calculate the median deviation from the median of the following data: Wages per week (in Rs.),10-20,20-30,30-40,40-50,50-60,60-70,70-80 No.of workers,4,6,10,20,10,6,4

Find the standard deviation for the following data: 10, 20, 30, 40, 50, 60, 70, 80, 90

In the following frequency distribution, the frequency of the class interval (40-50) is not known. Find it, if the arithmetic mean of the distribution is 52. {:("Wages(Rs.)",10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Workes"," "5," "3," "4," "?," "2," "6," "13):}

In the following frequency distribution, if the arithmetic mean is 45.6, find out missing frequency. {:("Wages(Rs.)",10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Workers"," "5," "6," "7," "X," "4," "3," "9):}