Recent content by AoKai

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    MHB How do I find the variance and what is the answer to the question?

    Yes. I've already found the mean. How do I find the variance?
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    MHB How do I find the variance and what is the answer to the question?

    Yes I do what those are, I've just been stuck on this particular question for about 5 hours now trying to figure out how to do it. Ive been using this formula given by my teacher. Sum ( (speed-mean)^2 * number of cars) / 249 But I'm not getting the correct answer. Apparently the variance...
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    MHB How do I find the variance and what is the answer to the question?

    Ive been stuck at this question for over 5 hours now trying to figure out what the answer is. Please help!:confused: We have observed 250 cars on a motorway with speed limit of 90 km/h Speed number of cars 75 32 85...