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Thread: Matrix Linear relationship

  1. #1
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    Matrix Linear relationship

    I have 4 numbers: The Average hours of study per week and the scores achieved of 2 students

    The numbers are 7 hours with a score of 75.45 and 20 hours with a score of 92.2 and the question asks me to use matrcies to find if there is a linear relationship between the two. I don't quite understand how to find if there is a linear relationship.
    I thought about using Gauss elimination but then realised that didn't really help me..
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  2. #2
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    Quote Originally Posted by CookieC View Post
    I have 4 numbers: The Average hours of study per week and the scores achieved of 2 students

    The numbers are 7 hours with a score of 75.45 and 20 hours with a score of 92.2 and the question asks me to use matrcies to find if there is a linear relationship between the two. I don't quite understand how to find if there is a linear relationship.
    I thought about using Gauss elimination but then realised that didn't really help me..
    I don't understand your question. Can you post the question you are giving verbatum?
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  3. #3
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    Make A table using "Average number of hours/week spent on homework" and "Score of exam" for the columns and fill in values. The values I got were 7 hours of homework and they received a score of 75.45% and the other was 20 hours of homework and 92.2%. Use matrices to find, if possible, a linear relationship between average hours spent on HW and Score
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    Quote Originally Posted by CookieC View Post
    Make A table using "Average number of hours/week spent on homework" and "Score of exam" for the columns and fill in values. The values I got were 7 hours of homework and they received a score of 75.45% and the other was 20 hours of homework and 92.2%. Use matrices to find, if possible, a linear relationship between average hours spent on HW and Score
    A linear relationship as in a line of the form y = mx + b?

    If so, you only have 2 points so it forms a line.
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  5. #5
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    My lecturer only wrote "a linear relationship" and didn't quite specify anything and that was the part I didn't understand. I didn't know what she meant by a linear relationship..
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    Quote Originally Posted by CookieC View Post
    My lecturer only wrote "a linear relationship" and didn't quite specify anything and that was the part I didn't understand. I didn't know what she meant by a linear relationship..
    What is the title of the course you are in?
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  7. #7
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    Math203- Linear Algebra
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  8. #8
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    Quote Originally Posted by CookieC View Post
    Math203- Linear Algebra
    Do you have a data table or just those two data points? I think you need to use ordinary least squares but you need more points.
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  9. #9
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    That's the only information that was given. I only have 4 numbers which is why it confused me so much
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