Advantages and Disadvantages of Mean, Median, Mode.

Descripción

Quiz on the advantages and disadvantages of Mean Median and Mode in Data Science.
Vishakha Achmare
Test por Vishakha Achmare, actualizado hace más de 1 año
Vishakha Achmare
Creado por Vishakha Achmare hace más de 3 años
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Resumen del Recurso

Pregunta 1

Pregunta
_______is called a data set containing all members of a specified group.
Respuesta
  • Population
  • Sample

Pregunta 2

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

Pregunta 3

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

Pregunta 4

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

Pregunta 5

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

Pregunta 6

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

Pregunta 7

Pregunta
Median is ________affected by outliers and skewed data.
Respuesta
  • More
  • Less

Pregunta 8

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

Pregunta 9

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

Pregunta 10

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

Pregunta 11

Pregunta
For floating data it will be difficult to calculate the _____.
Respuesta
  • Mean
  • Mode

Pregunta 12

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

Pregunta 13

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

Pregunta 14

Pregunta
IQR is ___________ by extreme values.
Respuesta
  • Not affected
  • Affected

Pregunta 15

Pregunta
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.
Respuesta
  • False
  • True

Pregunta 16

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

Pregunta 17

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

Pregunta 18

Pregunta
Standard Deviation can be used to detect ___________.
Respuesta
  • Mean
  • Skewness
  • Both
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