Given that a v 2 5480, v 288 and n 64, find the variance of v b w 2 4000, w 5 2 and n 36, find the standard deviation of w c x 2 f 6120, f 40 and the standard deviation of x is 12, find xf d xf 2800, f 50 and the variance of x is 100, find x 2 f e t 2 193144, t 2324 and that the standard deviation ...

a The variance of v can be found using the formula variance v2 n v n2 5480 64 288 642 85625 b T ...

Given that: a. v 2 = 5480, v = 288 and n = 64, find the variance

Question:

Given that:

a. Σv² = 5480, Σv = 288 and n = 64, find the variance of v.

b. Σw² = 4000, w̅ = 5.2 and n = 36, find the standard deviation of w.

c. Σx²f = 6120, Σf = 40 and the standard deviation of x is 12, find Σxf.

d. Σxf = 2800, Σf = 50 and the variance of x is 100, find Σx²f .

e. Σt² = 193144, Σt = 2324 and that the standard deviation of t is 3, find the number of data values of t.

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Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

ISBN: 9781108407304

1st Edition

Authors: Dean Chalmers, Julian Gilbey

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Question Posted: Sep 13, 2021 01:55 AM

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Given that: a. v 2 = 5480, v = 288 and n = 64, find the variance

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a The variance of v can be found using the formula variance v2 n v n2 5480 64 288 642 85625 b T...View the full answer

Cambridge International AS & A Level Mathematics Probability & Statistics 1 Coursebook

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