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GATE 2016 CE (CE2) – Question 11

Traffic Engineering and Transportation Planning · Traffic studies: flow, speed, peak hour factor, accident study · 1 mark · Numerical answer

The spot speeds (expressed in km/hr) observed at a road section are 66, 62, 45, 79, 32, 51, 56, 60, 53, and 49. The median speed (expressed in km/hr) is _________ (Note: answer with one decimal accuracy)

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Correct answer: 54.49 to 54.51

Explanation

Sort the ten observations:32,45,49,51,53,56,60,62,66,79km/h. For an even sample size the median is the average of the fifth and sixth observations. Hence median=(53+56)/2=**54.5km/h**. The arithmetic mean is a different measure.