Q/ In the vehicle speed test, the results are given in the table below: Find 1. Arithmetic mean 2. Standard deviation 3. Skew coefficient 4. Kurtosis coefficient * Speed range (km/hr Speed range (km/hr Speed range (km/hr Frequency(fi) Frequency(fi) Frequency(fi) 34-35.9 44-45.9 22 54-55.9 13 36-37.9 6. 46-47.9 56-57.9 8 38-39.9 4 48-49.9 18 58-59.9 6. 40-41.9 10 50-51.9 17 60-61.9 42-43.9 7 52-53.9 16 62-63.9 3

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