Answer to Question #326165 in Statistics and Probability for mame

Question

In a certain investigation, 460 persons were involved in the study, and based on an enquiry on their age, it was known that 75% of them were 22 or more. The following frequency distribution shows the age composition of the persons under study.Mid-age in years1318232833384348Number of persons24f190122f2562033a)Find the median and modal life of condensers and interpret them.b)Find the values of all quartiles.c)Compute the 5thdecile, 25thpercentile, 50thpercentile and the 75thpercentile and interpret the results.d)Find variance and standard deviation of the data.