2. From the soil of a pot, some earthworms are collected. Their lengths are recorded as below. Length (mm) Number of wor

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2 From The Soil Of A Pot Some Earthworms Are Collected Their Lengths Are Recorded As Below Length Mm Number Of Wor 1 (44.3 KiB) Viewed 44 times

2. From the soil of a pot, some earthworms are collected. Their lengths are recorded as below. Length (mm) Number of worms 95-109 2 110-124 8 125-139 17 140-154 26 155-169 24 170-184 16 185-199 6 200-214 (a) Introduce the following column on the frequency distribution: Midpoint, Midpoint x Frequency, Midpoint x Frequency, and Cumulative frequency [4 marks) (b) Estimate the variance and standard deviation of the population [4 marks) (c) Estimate the mode [2 marks] (d) Estimate the mean. [2 marks] (e) Estimate the median [2 marks] (1) Describe the shape of the distribution of the data [1 mark] (g) Assuming that the data is for all the earthworms found in the soil of the pot, what are the variance and standard deviation now? [3 marks]