To find intervals you need to calculate lower class boundaries and upper class boundaries

9 4.4 4.5 /4.7 / 4.4 1 4.5 4.9 / 4.7 4. 5/ 4. 6 4.5 4.5 4.5 4. 5 4. 6 4. 7/4.6 418 4.5 (a) Arrange the data into equal classes (b) Determine the frequency distribution S - - (c) Draw the frequency histogram (d) Create a cumulative frequency table for the data (e) Draw the cumulative frequency graph (f) Use your cumulative frequency graph to determine if the data is normally distributed or not? (g) Calculate: i) the mean and standard deviation; ii) the upper and lower quartile values; and iii) the inter-quartile range for the given data