Advantages and Disadvantages of Mean, Median, Mode.

Descrição

Quiz on the advantages and disadvantages of Mean Median and Mode in Data Science.
Vishakha Achmare
Quiz por Vishakha Achmare, atualizado more than 1 year ago
Vishakha Achmare
Criado por Vishakha Achmare mais de 3 anos atrás
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Resumo de Recurso

Questão 1

Questão
_______is called a data set containing all members of a specified group.
Responda
  • Population
  • Sample

Questão 2

Questão
________ is a data set that contains a part, or a subset of a population.
Responda
  • Population
  • Sample

Questão 3

Questão
Mean does not require sorting of data, as sorting of data is costly so it can be used for __________numeric data.
Responda
  • Continuous
  • Discrete
  • Both

Questão 4

Questão
The mean cannot be calculated for ________ data, as the values cannot be summed.
Responda
  • Categorical
  • Continuous

Questão 5

Questão
Median is __________ by the outliers and for a symmetric distribution, the mean _________median.
Responda
  • Affected, Not Equal to
  • Unaffected, Equals to

Questão 6

Questão
In skewed data, the mean lies further towards the ______ then the median.
Responda
  • Skew
  • Centre

Questão 7

Questão
Median is ________affected by outliers and skewed data.
Responda
  • More
  • Less

Questão 8

Questão
Median cannot be identified for the _________ nominal data, as it cannot be logically ordered.
Responda
  • Categorical
  • Ordinal

Questão 9

Questão
Is it possible for the data set to be multimodal (have more than one mode) ?
Responda
  • True
  • False

Questão 10

Questão
Mode can be obtained for _____________ data. Can be graphically represented with a ____________.
Responda
  • Both, Histogram
  • Numerical, Histogram
  • Categorical, Histogram

Questão 11

Questão
For floating data it will be difficult to calculate the _____.
Responda
  • Mean
  • Mode

Questão 12

Questão
Range is ____________ to outliers and does not use all the observations in a data set.
Responda
  • Very sensitive
  • Not sensitive

Questão 13

Questão
What can be used as a measure of variability if the extreme values are not being recorded exactly?
Responda
  • Inter Quartile Range (IQR)
  • Range

Questão 14

Questão
IQR is ___________ by extreme values.
Responda
  • Not affected
  • Affected

Questão 15

Questão
The advantage of variance is that it treats all deviations from the mean the same regardless of their direction. The squared deviations cannot sum to zero and give the appearance of no variability at all in the data.
Responda
  • False
  • True

Questão 16

Questão
Variance gives added weight to outliers, the numbers that are far from the mean. Squaring these numbers can skew the data.
Responda
  • False
  • True

Questão 17

Questão
Variance is not easily interpreted as we square the data, changing its dimensions from original one.
Responda
  • True
  • False

Questão 18

Questão
Standard Deviation can be used to detect ___________.
Responda
  • Mean
  • Skewness
  • Both

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