My answer for E(X) is 2.5 and E(X^2) is 6.25, is this the correct answer? I’m

Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.

junior college 2 | H2 Maths
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question

junior college 2 H2 Maths Singapore

My answer for E(X) is 2.5 and E(X^2) is 6.25, is this the correct answer? I’m not sure how to calculate the variance and the standard deviation

Date Posted: 4 years ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 4 years ago

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Date Posted: 3 years ago