-6.4 2.7 5.0 10.2 -11.8 -3.3 21.5 -9.6 4.5 11.1 14.5 4.6 -4.1 OW -4.1 -4.3 0.1 19.0 -9.7 ur 22.0 24.8 15.4 wer 11.1 14.5 -9.2 Click here for the Excel Data File a. Construct a frequency distribution using classes of -20 up to -10, -10 up to 0, etc. Class (in %) Frequency -20 up to -10 -10 up to 0 CO 0 up to 10 5 10 up to 20 20 up to 30 Co Total 24