Skewed Distributions in Data Science.

Description

Quiz on skewed distributions.
Vishakha Achmare
Quiz by Vishakha Achmare, updated more than 1 year ago
Vishakha Achmare
Created by Vishakha Achmare over 3 years ago
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Resource summary

Question 1

Question
Generally, data points cluster on one side more than the other. We call these types of distributions __________.
Answer
  • Normal Distributions
  • Skewed Distributions

Question 2

Question
In Left Skewed Distribution data points cluster on the _____side of the distribution, then the tail would be longer on the ______side.
Answer
  • Left, Right
  • Right, Left
  • Center
  • None

Question 3

Question
What type of Distribution is this?
Answer
  • Left Skewed
  • Right Skewed

Question 4

Question
In Left Skewed Distribution the tail is longer in the _______ Direction and the Mode _______ Median _______ Mean.
Answer
  • Negative, Mode > Median > Mean
  • Positive, Mode < Median < Mean

Question 5

Question
In Right Skewed Distribution data points cluster on the _____side of the distribution, then the tail would be longer on the ______side.
Answer
  • RIght, Left
  • Left, Right
  • Center

Question 6

Question
Which type of Distribution is this?
Answer
  • Right Skewed
  • Left SKewed

Question 7

Question
In Right Skewed Distribution the tail is longer in the _______Direction and the Mode ___ Median___ Mean.
Answer
  • Negative, Mode > Median >Mean
  • Positive, Mode < Median < Mean

Question 8

Question
A Density plot is a smoothed, _______ version of a histogram estimated from the data.
Answer
  • continuous
  • Uncontinous

Question 9

Question
Kernel density estimation (KDE) is a ________ curve (the kernel) is drawn at every individual data point and all of these curves are then added together to make a single smooth density estimation.
Answer
  • Uncontinuous
  • Continuous

Question 10

Question
If Quantiles are cut points dividing the range of a probability distribution into continuous intervals with equal probabilities or dividing the observations in a sample in the same way. Then Answer the following. 2 quantile is known as the__________ 4 quantile is known as the __________ 10 quantile is known as the__________ 100 quantile is known as the _________
Answer
  • Percentile, Median, Quartile, Decile.
  • Quartile, Decile, Percentile, Median
  • Decile, Percentile, Median, Quartile
  • Median, Quartile, Decile, Percentile

Question 11

Question
The Q-Q plot or quantile-quantile plot is a _______plot created by plotting two sets of quantiles against one another.
Answer
  • scatter
  • box

Question 12

Question
Skewness is also another measure to check for normality which tells us the amount and direction of the skewed data points. Generally for the value of Skewness: If the value is less than -0.5, we consider the distribution to be _________skewed where data points cluster on the right side and the tails are longer on the left side of the distribution Whereas if the value is greater than 0.5, we consider the distribution to ____________skewed where data points cluster on the left side and the tails are longer on the right side of the distribution And finally, if the value is between -0.5 and 0.5, we consider the distribution to be approximately __________.
Answer
  • Positively, Negatively, Unsymmetric
  • Negatively, Positively, Symmetric

Question 13

Question
Another numerical measure to check for Normality is Kurtosis. Kurtosis gives the information regarding tailedness which basically indicates the data distribution along the ________.
Answer
  • Center
  • Tails

Question 14

Question
For the symmetric type of distribution, the Kurtosis value will be close to_______. We call such types of distributions as Mesokurtic distribution. Its tails are similar to Gaussian Distribution (Normal).
Answer
  • One
  • Zero

Question 15

Question
In cases, where the value of K is greater than zero. Tail will be ______ and will have ________distribution. We call such types of distributions as Leptokurtic Distribution.
Answer
  • Fatter, Longer
  • Thinner, Shorter

Question 16

Question
In cases, where the value of "K" is less than zero. Tail will be ______ and will have ________distribution. We call such types of distributions as Platykurtic Distribution.
Answer
  • Fatter, Longer
  • Thinner, Short
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