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Practice | SPM Mathematics

SPM 1449 Mathematics (KSSM)

Question
Bahasa Melayu
Chalet Encik Rosli di tepi sungai di Kuala Tahan, Pahang mempunyai 24 orang pekerja, dengan x mewakili umur bagi setiap pekerja. Diberi bahawa hasil tambah (x - xbar)^2 = 1080 dan hasil tambah x^2 = 30480, dengan keadaan xbar ialah min umur.

Hitung varians umur pekerja itu.

English
Encik Rosli's riverside chalet in Kuala Tahan, Pahang employs 24 staff members, and x represents the age of each staff member. It is given that sum of (x - xbar)^2 = 1080 and sum of x^2 = 30480, where xbar is the mean age.

Calculate the variance of the ages of the staff.
[2 marks]
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Modelled on SBP trial · Kertas 2 · Q17(d)(i)

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Modelled on SBP trial · Kertas 2 · Q17(d)(i)
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