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Exercise 14.1 |
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Answer» In order to find the mean value, we will use direct method because the numerical value of fi\xa0and xi\xa0are small.Find the midpoint of the given interval using the formula.Midpoint (xi) = (upper limit + lower limit)/2\tNo. of plants (Class interval)No. of houses Frequency (fi)Mid-point (xi)fixi0-21112-42364-61556-857358-10695410-122112212-1431339\xa0Sum fi\xa0= 20\xa0Sum fixi\xa0= 162\tThe formula to find the mean is:Mean = x̄ = ∑fi\xa0xi\xa0/∑fi\xa0= 162/20= 8.1Therefore, the mean number of plants per house is 8.1\xa0Click for more:NCERT Solutions for Class 10 Maths Exercise 14.1 ... In e |
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