The number of cellular phones stolen in South Africa for 30 consecutive days is shown below

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QUESTION 1 The number of cellular phones stolen in South Africa for 30 consecutive days is shown below.

23	27	41	32	28	34	35	42	48	53
45	53	16	33	57	55	43	31	11	58
59	18	24	47	31	15	42	44	36	15

1.1. Using 6 classes of equal width, construct a grouped frequency distribution of the above data.

1.2. Draw an OGIVE curve depicting the data and use it to estimate the 40th percentile.

1.3. Calculate the mid-50% range.

1.4. Calculate the coefficient of variation and interpret the value obtained.

Hint

Frequency is a number of times a particular value occurs. By counting frequencies, frequency distribution can be constructed. A frequency distribution consists of class interval and corresponding frequencies. In excel best way to construct frequency distribution is using Pivot table.According to 2k rule, 2k >= n; where k is the number of classes and n is the number of data points.The ...

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23	27	41	32	28	34	35	42	48	53
45	53	16	33	57	55	43	31	11	58
59	18	24	47	31	15	42	44	36	15

23	27	41	32	28	34	35	42	48	53
45	53	16	33	57	55	43	31	11	58
59	18	24	47	31	15	42	44	36	15

23	27	41	32	28	34	35	42	48	53
45	53	16	33	57	55	43	31	11	58
59	18	24	47	31	15	42	44	36	15