Calculate the rank correlation coefficient from the data given below:
`{:(,"Marks in Statistics",45,56,39,54,55,40,58,60,30,36),(,"Marks in Mathematics",40,36,30,44,38,32,45,42,20,34):}`

Find the mean deviation about the mean for the data given below:- 38,70,48,40,42,55,63,46,54,44

Calculate spearman's rank correlation coefficient between the advertisement cost and sales cost of making a Maggie. The following data is given below. {:("Advertisement cost (₹ in thousand)",40,32,38,32,50,60,55),("Sales (₹ in lakhs)",32,35,43,40,42,50,70):}

Caculate the median and mode from the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Students"," "2," "18," "30," "45," "35," "20," "6," "3):}

Calculate the mean deviation about median of the following data: 34, 66, 30, 38, 44, 50, 40, 60, 42, 51

Calculate the mean marks from the following data: {:("Marks",20-25,25-30,30-35,35-40,40-45,45-50,50-55),("No. of Students"," "10," "12," "8," "20," "11," "4," "5):}

Calculate the median from the following series : {:("Age (Years)",55-60,50-55,45-50,40-45,35-40,30-35,25-30,20-25),("Number of Students"," " 7," "13," "10," "15," "30," "33," "28," "14):}

Calculate the average deviation from the arithmetic mean and coefficient of mean deviation : 20 , 22 , 27 , 30 , 31 , 32 , 35 , 40 , 45 , 48

Find the mean deviation about the medain for the given data: 34,66,30,38,44,50,40,60,42,51