Question: Question 1 The following data represent that standby time. in hours, for 12 models of mobile phones: 30. 25. 45. 4. 38. 46, 23. 4D,

Question 1 The following data represent that standby time. in hours, for 12 models of mobile phones: 30. 25. 45. 4. 38. 46, 23. 4D, 33. 32. 24. 26 {a} Construct a stem-and-leaf display {6 marks] (b) Supposedly you are inserting the above stemandleaf display in a report to be submitted to management, write a short comment on the diagram. {6 marks] Question 2 The following data shows the amount [in mg) of a certain mineral found in a sample of 13 types of vegetable: 342 425 31? 545 254 451 1049 631 512 265 492 562 293 {a} Compute the mean. median and mode. {5 marks] {b} Determine the shape of the distribution based on the sample data? Explain your conclusion. {2 marks] {o} Calculate the variance and standard deviation. {5 marks]

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