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This question is tricking me (standard deviation) The monthly rentals per square metre for office space in 40 buildings in Vereeniging central (in rand) are

This question is tricking me (standard deviation)

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The monthly rentals per square metre for office space in 40 buildings in Vereeniging central (in rand) are summarized in the following frequency table Rentals(Rands) Frequency(f) [150 ; 200) [200 ; 250) [250 ; 300) [300 ; 350) [350 ; 400) Calculate sample standard deviation A. 3948.72 B. 3850 C. 62.05 D. -76452.63 E. 62.84

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