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Data Analysis

Showing 1-75 of 251 answers

___________ uses artifacts to present data visually.
  • Statistics Analytics
  • Data Mining
  • Text Analytics
  • data visualization Correct
_____________ includes identifying groups of data record.
  • Statistics Analytics
  • Cluster analysis Correct
  • Business Intelligence
  • Text Analytics
_____________ is rated as the number one business analytics software
  • Knime
  • Rapid miner Correct
  • WEKA
  • Orange
_______________ is a data structure that every component has a unique processor and succesor.
  • linear Correct
  • nonlinear
  • static
  • dynamic
“ All models are wrong but some are useful “
  • WilliamGibson
  • Georg cantor
  • George E P Box Correct
  • DJPatil
A bell shaped curve that is symmetric about a vertical line.
  • normal distribution Correct
  • kurtic
  • skewed
  • standard distribution
A bell-shaped distribution that is symmetric about a vertical line.
  • standard
  • skewed
  • normal Correct
  • symmetric
A data having the same number of occurrence in scores is said to be
  • no mode Correct
A distribution where large distribution are displayed.
  • Grouped frequency distribution Correct
  • ogive
  • histogram
  • Relative frequency distribution
A frequently used method as it enables binary variables, sum polytomous variable to be modelled.
  • logistic regression Correct
  • exponential regression
  • linear regression
  • binomial regression
A graph that is used to indicate frequency distribution.
  • histogram Correct
A graph used to indicate intervals in a frequency distribution is refereed to as a______________.
  • bar graph
  • pie graph
  • ogive
  • histogram Correct
A matrix that has the same number of rows and columns is called
  • Square Correct
A model thatcorresponds to the case where the dependent variable has more than two categories.
  • multinomial logit model Correct
A negative correlation exists when___________.
  • x increases y decreases Correct
A network purpoting to describe family memberships
  • network topology Correct
  • networking
  • network tautology
  • network adherence
A new phenomenon for the explosion of _________data
  • communication
  • transient
  • transaction
  • interaction Correct
A perfect positive correlation coefficient is equal to
  • 1 Correct
A positive z-score means that the score is
  • Onestandard deviation higher than the mean
  • Equalto the mean
  • Lowerthan the mean
  • Higherthan the mean Correct
A score of 3 in2,4,4,4,5,5,6,8,9 is
  • 102 below the mean Correct
  • 12 above the mean
  • 192 above the mean
  • 118 below the mean
A score of 50 lies 2 standard deviations above a mean of 30.What is the value of the standard deviation?
  • 25
  • 20
  • 10 Correct
  • 15
A special type of function where the domain is a set of consecutive integers.
  • sequence Correct
A survey of 100 consumers said that the price charged for a kilo of rice could be approximated by a normal distribution with a mean of 35 and a standard deviation of 4.How many are less than 39?
  • 82
  • 84 Correct
  • 80
  • 78
A survey of 100 consumers said that the price charged for a kilo of rice could be approximated by a normal distribution with a mean of 35 and a standard deviation of 4.How many of them lie between 27 and 43?
  • 90
  • 95 Correct
  • 88
  • 92
A vegetable distributor knows that during the month of August ,the weights of tomatoes are normally distributed with a mean of 0.61 lb and a standard deviation of 0.15 lb. How many can be expected to weigh between 0.31 to 0.91 in a shipment of 4500 tomatoes.
  • 4275 Correct
A vegetable distributor knows that during the month of August ,the weights of tomatoes are normally distributed with a mean of 0.61 lb and a standard deviation of 0.15 lb. How many can be expected to weigh more than 0.31 lb in a shipment of 6000 tomatoes.
  • 150 Correct
A vegetable distributor knows that during the month of August ,the weights of tomatoes are normally distributed with a mean of 0.61 lb and a standard deviation of 0.15 lb. What percent of the tomatoes weigh less than 0.71 lb?
  • 84 Correct
According to Hilary Mason which is NOT a skill that a good data scientist must cultivate.
  • critical thinking Correct
Addition and subtraction of matrices only is possible if two are more matrices.
  • Have same number of columns
  • Are square matrices
  • Have same number of rows
  • Have same sizes Correct
Adistribution with 4 modes is said to be a _________distribution
  • trimodal
  • multimodal Correct
  • bimodal
  • unimodal
Algorithm analysisis an important part of a broader_____________.
  • computational complexity theory Correct
All representations are ________.
  • unstable
  • perfect
  • stable
  • imperfect Correct
An array is a good example of _________data structure.
  • nonlinear
  • linear
  • dynamic
  • static Correct
An example of an abstract computer.
  • Turing machine Correct
Another term for an empty set.
  • null Correct
Another term for text analytics.
  • text mining Correct
Another term for variability
  • mean
  • center
  • frequent
  • dispersion Correct
Any way to get new expressions from old ones
  • semantic
  • surrogate
  • inference Correct
  • reasoning
As of 2014,there are _______million of tweets a day.
  • 500 Correct
Classification table is also called ________
  • criteria matrix
  • confidential matrix
  • confusion matrix Correct
  • conditional matrix
Data involving two variables.
  • bivariate Correct
Data is NOT information unless we add_________.
  • analytics Correct
Displays the performance of a model and enables a comparison to be made with other models.
  • DAC
  • ROC curve Correct
  • SBC
  • GLM
Earlier name fordata science.
  • datalogy Correct
Empirical rule for a normal distribution lie ______% of data with 1 standard deviation below and above the mean.
  • 79
  • 68 Correct
  • 64
  • 75
Empirical rule for a normal distribution that is 2 standard deviations above and below the mean is ________% of data.
  • 85
  • 80
  • 90
  • 95 Correct
Empirical rule for a normal distribution that is 3 standard deviations above and below the mean covers ______% of the data.
  • 98
  • 95
  • 997 Correct
  • 92
Exabyte means ________bytes
  • millionmillion
  • billionbillion Correct
  • trilliontrillion
  • thousandthousand
Example of a data product.
  • google map Correct
He coined the term "data scientist"
  • DJ Patil Correct
He coined the term “analysis of algorithms”.
  • Donald Knuth Correct
He is someone who asks interesting questions on formal and informal theory.
  • data scientist Correct
He pointed out that until 2003 ,all of mankind had generated just 5 exabytes of data
  • Eric Smith
  • Eric Schmidt Correct
  • Eric Smidth
  • Eric Smicht
He proposed the use of a penalized likehood function.
  • Hein
  • Gombartz
  • Heitz
  • Firth Correct
He said that “ In mathematics the art of proposing a question must be held of higher value than solving it”.
  • GeorgCantor Correct
  • FrancisGalton
  • WilliamGibson
  • EricSchmidt
How many bytes of data are generated every two days in today's world?
  • 5 megabytes
  • 5 gigabytes5 gigabytes
  • 5 terabytes
  • 5 exabytes Correct
If A= { x/x is a distinct letter in the word "MATHEMATICS"} AND B={x/x is a distinct letter in the word"STATISTICS"} then their intersection is
  • {C,I,S}
  • {A,C,I,S,T}
  • {A,C,I,S}
  • {A,C,S,}
If A={ 2,3} B={4,5},which of the following is a Cartesian product of the two sets?
  • { (3,4) (3,5) (2,4 ) {2,2) }
  • { (3,4) (3,5) (2,4 ) {2,5) } Correct
  • { (3,4) (3,3) (2,4 ) {2,5) }
  • { (3,3) (3,5) (2,4 ) {2,5) }
If in a distribution all scores are distinctthen_____________
  • itis skewed
  • thereis no mode Correct
  • themean is higher than the mode
  • itis normal
If R= { (3,3), (3,6), (5,5),(5,10),(6.12)} is a binary relation in R which the domain is
  • {3,5,6} Correct
If the standard deviation of a distribution is 3, the variance is
  • 141
  • 6
  • 15
  • 9 Correct
If the standard deviation of a distribution is 3.5, the variance is
  • 12.25 Correct
If there are 101 scores the median is equal tothe _____ranked score
  • 51st Correct
  • 54th
  • 52nd
  • 55th
If there are 103 scores the median is equal to the _____ranked score.
  • 52nd Correct
In 2,4,4,4,5,5,6,8,9 the range is
  • 5
  • 3
  • 6
  • 7 Correct
In the equation of the regression line represented by Y= 1.24 X + 6.9 if X=2 then Y =?
  • 9.38 Correct
IOT means
  • Internet of time
  • Interaction of time
  • Internet of things Correct
  • Interconnction of things
It allows you to see which value of the explanatory variable corresponds a given probability success
  • probability analysis table Correct
  • ogive
  • probability table
  • histogram
It corresponds to the case where the dependent variable has more than 2 categories.
  • trinomial logit model
  • multinomial logit model Correct
  • binomial logit model
  • polynomial logit model
It does NOT require the assumption that the parameters are normally distributed
  • profile likehood Correct
  • definite likehood
  • mass likehood
  • densiy likehood
It does NOT require the assumption that the parameters are normally distributed.
  • profile likehood Correct
It enables the performance of a model and enables a comparison to be made with other models.
  • LR
  • IOT
  • GML
  • ROC Correct
It expands available data enormously since there is so much more text being generated than numbers.
  • Text mining Correct
  • text analysis
  • data mining
  • data ranking
It expands available data enormously.
  • text mining Correct
It extracts meaningful numerical indices from information and make it available to statistical andmachine learning.
  • business intelligence
  • Text analytics Correct
  • data mining
  • data visualization
This course is taught by the mentor:
Professor Ariel Piol

Ariel Piol

Master of Arts in Teaching Major in Mathematics.

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