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    • #1168
      Abhishek TyagiAbhishek Tyagi
      Keymaster

      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 comma

      Answer-
      10.5

      Question 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 comma

      Answer-
      3.5

      Question 4- Which of the following two plots has a higher standard deviation?

      Answer-
      Graph
      PLOT 2

      Question 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 comma

      Answer-
      10.562196

      Question 6-
      Which of the two plots indicates a higher kurtosis value?

      Answer-
      Plot 1

      Question 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 decimal

      Answer-
      3.296812

      Question 8- What is true about this value distribution?

      Question 8
      Answer-
      The distribution is positively Skewed

      Question 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 decimal

      Answer-
      0.70927291

      Question 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 decimal

      Answer-
      3.650

      Question 11- The correlation between the following two lists is zero, can you explain why?
      1,2,3,4,5,6,7
      7,6,5,4,5,6,7

      Answer-

      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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