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Tagged: Apache, Apache Spark, IBM, Independent Linear Regression, Machine Learning, Python, Regression
 This topic has 0 replies, 1 voice, and was last updated 10 months ago by Abhishek Tyagi.

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August 26, 2020 at 2:00 pm #1168Abhishek TyagiKeymaster
Question 1 What is the advantage of median over mean?
Answer
Median is more outlier resistent. Odd values influence median less than mean.Question 2 What is the mean of the following list?
1,2,4,5,34,1,32,4,34,2,1,3
Please use a decimal point instead of a commaAnswer
10.5Question 3 What is the median of the following list?
1,2,4,5,34,1,32,4,34,2,1,3
Please use a decimal point instead of a commaAnswer
3.5Question 4 Which of the following two plots has a higher standard deviation?
Answer
PLOT 2Question 5 What is the standard deviation of the following list?
34,1,23,4,3,3,12,4,3,1
Please enter at least 3 digits after the decimal
Please use a decimal point instead of a commaAnswer
10.562196Question 6
Which of the two plots indicates a higher kurtosis value?Answer
Plot 1Question 7 What is the kurtosis of the following list?
34,1,23,4,3,3,12,4,3,1
Please enter at least three digits after the decimalAnswer
3.296812Question 8 What is true about this value distribution?
Answer
The distribution is positively SkewedQuestion 9 What is the correlation between the two lists?
1,2,3,4,5,6,7,8,9,10
7,6,5,4,5,6,7,8,9,10
Please enter at least three digits after the decimalAnswer
0.70927291Question 10 What is the covariance between the two lists?
1,2,3,4,5,6,7,8,9,10
7,6,5,4,5,6,7,8,9,10
Please enter at least three digits after the decimalAnswer
3.650Question 11 The correlation between the following two lists is zero, can you explain why?
1,2,3,4,5,6,7
7,6,5,4,5,6,7Answer
Correlation of 1st half of the list is negative and between the last half of the list is positive so they cancel out


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