Quiz I &amp; II Solutions

# Quiz I &amp; II Solutions - measurements 3 and 5 The...

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Data on text messages sent has been collected over a number of days. What is the mean number of messages sent? Day # Messages 1 10 2 3 3 11 4 2 5 7 6 6 7 5 8 7 9 8 10 9 11 8 12 9 13 3 14 5 N n x x x N i N i x + + + = = = = ... 2 1 1 mean μ 14 5 3 9 8 9 8 7 5 6 7 2 11 3 10 + + + + + + + + + + + + + = 64 . 6 =

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A set of resistor measurements yields the following results. What is the median of the data set? Measurement Result (k ) 1 12 2 16 3 14 4 16 5 15 6 13 7 10 8 16 9 12 10 16 If the measurements are arranged in ascending or descending order, the median is the value at the center of the set. If the set contains an even number of elements, the median is the average of the two central values. Placing the data set in ascending order: Measurement Result (k ) 7 10 1 12 9 12 6 13 3 14 5 15 2 16 4 16 8 16 10 16 The data set contains an even number of elements. The two central values are

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Unformatted text preview: measurements 3 and 5. The average of these results is 14.5 k Ω . A set of resistor measurements yields the following results. What is the median of the data set? Measurement Result (k Ω ) 1 9.80 2 9.92 3 9.82 4 9.86 5 9.88 6 9.82 7 9.86 8 9.90 9 9.93 10 9.85 If the measurements are arranged in ascending or descending order, the median is the value at the center of the set. If the set contains an even number of elements, the median is the average of the two central values. Placing the data set in ascending order: Measurement Result (k Ω ) 1 9.80 3 9.82 6 9.82 10 9.85 4 9.86 7 9.86 5 9.88 8 9.90 2 9.92 9 9.93 The data set contains an even number of elements. The two central values are measurements 4 and 7. The average of these results is 9.86 k Ω ....
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## This note was uploaded on 08/08/2008 for the course ENGR 202 taught by Professor Scoles during the Fall '08 term at Drexel.

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Quiz I &amp; II Solutions - measurements 3 and 5 The...

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