What is the kurtosis of the following list?34,1,23,4,3,3,12,4,3,1Please enter at least three digits after the decimal
Question
What is the kurtosis of the following list?34,1,23,4,3,3,12,4,3,1Please enter at least three digits after the decimal
Solution
To calculate the kurtosis of a dataset, we need to follow these steps:
- Calculate the mean (average) of the dataset.
- Subtract the mean from each data point and square the result (the squared difference).
- Calculate the average of these squared differences (this is the variance).
- Subtract the mean from each data point and raise the result to the power of 4.
- Calculate the average of these values (this is the fourth moment).
- Divide the fourth moment by the square of the variance (this is the kurtosis).
Let's calculate:
- Mean: (34+1+23+4+3+3+12+4+3+1) / 10 = 8.8
- Squared differences: (25.2, 60.84, 200.64, 23.04, 33.64, 33.64, 10.24, 23.04, 33.64, 60.84)
- Variance: (25.2+60.84+200.64+23.04+33.64+33.64+10.24+23.04+33.64+60.84) / 10 = 50.504
- Fourth moment: (506.25, 13838.49, 160030.98, 279.51, 506.25, 506.25, 68.36, 279.51, 506.25, 13838.49)
- Average of fourth moment: (506.25+13838.49+160030.98+279.51+506.25+506.25+68.36+279.51+506.25+13838.49) / 10 = 33137.084
- Kurtosis: 33137.084 / (50.504)^2 = 13.045
So, the kurtosis of the dataset is 13.045.
Similar Questions
What is the standard deviation of the following list?34,1,23,4,3,3,12,4,3,1Please enter at least 3 digits after the decimal
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Question 2What is the mean of the following list?1,2,4,5,34,1,32,4,34,2,1,3Please use a decimal point instead of a comma1 point
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