the following data gives mark of 50 students in an English language test:45,50,60,35,20,65,40,45,48,25,24,40,48,28,30,30,16,8,5,15,50,28,42,55,15,25,30,38,58,68,4,18,24,58,46,36,32,56,57,18,25,36,42,15,25,55,49,50,48,28.a).construct a frequency table for this data using class interval 0-9,10-19,20-29,30-39,40-49,50-59,60-69.b).calculate the mean mark.c).calculate the mean deviation.
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the following data gives mark of 50 students in an English language test:45,50,60,35,20,65,40,45,48,25,24,40,48,28,30,30,16,8,5,15,50,28,42,55,15,25,30,38,58,68,4,18,24,58,46,36,32,56,57,18,25,36,42,15,25,55,49,50,48,28.a).construct a frequency table for this data using class interval 0-9,10-19,20-29,30-39,40-49,50-59,60-69.b).calculate the mean mark.c).calculate the mean deviation.
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