PMS 2019 Past Paper MCQs, Everyday Science MCQs, PPSC Solved Past Papers MCQsA _____ is a representation of a frequency distribution by means of rectangles whose width represents class intervals and whose areas are proportional to the corresponding frequenciesA. Pictograph B. Histogram C. Pie Chart D. Bar Chart The ______ is equal to the sum of all the values in the data divided by the number of all the values in the data divided by the number of values in the data?Which instrument is suitable to measure the internal diameter of a test tube?