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Show all working The following table shows the distribution of daily prots made by a local supermarket over a 30-day period. Table I Profits Number

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The following table shows the distribution of daily prots made by a local supermarket over a 30-day period. Table I Profits Number of days (Dollars) 1024 25- 39 55- 69 (i) State one disadvantage of displaying data in groups (ii) Use the table above to estimate the following a. The mean of the distribution b. The median of the distribution c. The sample variance of the distribution

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