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2 Unit AS 2: Applied Mathematics

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Question 140

The masses, m m\,m grams, of 40 items are coded using x=m−502x=\dfrac{m-50}{2}x=2m−50​. The coded data have mean 3.5 and variance 4.84.

a.

Find the mean mass.

[1]
b.

Find the variance of the masses.

[2]
c.

Interpret the standard deviation of the masses.

[1]
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2 Unit AS 2: Applied Mathematics Questions

  1. A Level
  2. /Maths
  3. /2 Unit AS 2: Applied Mathematics

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