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    8102 Assignment 2 - Probability Distribution

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    The document analyzes download time data from a website to determine if it follows a normal distribution. It calculates descriptive statistics like the mean, median, mode, and standard deviation. A distribution curve is drawn which has a bell shape, indicating a normal distribution. Properties of normal distributions are tested, with 68% of observations within one standard deviation of the mean and 95% within two standard deviations. Therefore, the data can be approximated by a normal distribution.

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    8102 Assignment 2 - Probability Distribution

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    t
    15 views1 page
    The document analyzes download time data from a website to determine if it follows a normal distribution. It calculates descriptive statistics like the mean, median, mode, and standard deviation. A distribution curve is drawn which has a bell shape, indicating a normal distribution. Properties of normal distributions are tested, with 68% of observations within one standard deviation of the mean and 95% within two standard deviations. Therefore, the data can be approximated by a normal distribution.

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    The document analyzes download time data from a website to determine if it follows a normal distribution. It calculates descriptive statistics like the mean, median, mode, and standard deviation. A distribution curve is drawn which has a bell shape, indicating a normal distribution. Properties of normal distributions are tested, with 68% of observations within one standard deviation of the mean and 95% within two standard deviations. Therefore, the data can be approximated by a normal distribution.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    15 views1 page

    8102 Assignment 2 - Probability Distribution

    Uploaded by

    t
    The document analyzes download time data from a website to determine if it follows a normal distribution. It calculates descriptive statistics like the mean, median, mode, and standard deviation. A distribution curve is drawn which has a bell shape, indicating a normal distribution. Properties of normal distributions are tested, with 68% of observations within one standard deviation of the mean and 95% within two standard deviations. Therefore, the data can be approximated by a normal distribution.

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    © All Rights Reserved
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    Download as docx, pdf, or txt
    of 1

    Objective : To apply descriptive statistical measures and probability distribution to identify patterns

    in the data and analyse the study conducted by QRT team and evaluate their conclusions.

    Variable Inputs of Data : Download Times of OurCampus Homepage

    Descriptive Statistics - Time 


       
    Mean 12.8596 Distribution Curve
    Standard Error 0.327927804 35
    Median 12.785 30
    Mode 15.46 25
    Standard Deviation 3.279278043 20

    Frequency
    Sample Variance 10.75366448 15
    Kurtosis 0.883307947 10
    Skewness -0.214752012 5
    Range 19.87 0
    Minimum 2.46 46 4 7 3 4 2 1 0 8 9 5 8 2 6 9 5 6 4 3 r e
    Maximum 22.33 2. 4.4 6.4 8.4 0.4 2.3 4.3 6.3 8.3 0.3 Mo
    1 1 1 1 1 2
    Sum 1285.96
    Time
    Count 100

    Question 1 : Can the collected data be approximated by normal distribution?

    Answer 1 : Yes, the collected data can be approximated by a normal distribution. We draw a
    distribution bar chart of the collected data and note that it has a clear bell shape which indicates a
    symmetric curve or normal distributions. Furthermore, we test some important properties of a
    normal distribution: that about 68% of observations lie within one standard deviation of the mean
    (in our case 73%) and that about 95% of observations lie within two standard deviations of the mean
    (in our case 94%).

    2. It is true that a 15-second download is less likely than a 14 or 13-second download. Even
    though in our collected data, there were more 15-second downloads than 13- or ...

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