The following data are the measures of the resistance of resistors produced in electronic factory. Resistance (kΩ) 0 ≤ < 15 15 ≤ < 30 30 ≤ < 45 45 ≤ < 60 Frequency (×1000) 50 100 75 25
A. Construct a frequency distribution table with relative frequency for all categories.
B. Draw a histogram and ogive graph with the relative frequency distribution and class cumulative frequency respectively.
C. Use histogram graph to find the mode value.
D. Draw the polygon graph.
E. Calculate the mean, median, mode, range, variance and standard deviation.