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AMA University Answers
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Data Analysis

Showing 1-75 of 221 answers

___________ uses artifacts to present data visually.
  • data visualization Correct
210
_____________ includes identifying groups of data record.
  • Cluster analysis Correct
267
1
_______________ is a data structure that every component has a unique processor and succesor.
  • linear Correct
423
2
“ All models are wrong but some are useful “
  • George E. P. Box Correct
115
A bell shaped curve that is symmetric about a vertical line.
  • normal distribution Correct
265
A bell-shaped distribution that is symmetric about a vertical line?
  • normal Correct
177
A bell-shaped distribution that is symmetric about a vertical line.
  • normal Correct
48
A data having the same number of occurrence in scores is said to be
  • no mode Correct
141
A distribution where large distribution are displayed.
  • Grouped frequency distribution Correct
110
A frequently used method as it enables binary variables, sum polytomous variable to be modelled.
  • logistic regression Correct
239
A graph that is used to indicate frequency distribution.
  • histogram Correct
281
A graph used to indicate intervals in a frequency distribution is refereed to as a______________.
  • Histogram Correct
253
1
A matrix that has the same number of rows and columns is called
  • Square Correct
54
1
A model thatcorresponds to the case where the dependent variable has more than two categories.
  • multinomial logit model Correct
89
1
A negative correlation exists when___________.
  • x increases y decreases Correct
303
A network purpoting to describe family memberships
  • network topology Correct
104
1
A network purpoting to describe family memberships.
  • network topology Correct
65
1
A new phenomenon for the explosion of _________data
  • interaction Correct
108
A perfect positive correlation coefficient is equal to
  • 1 Correct
181
A positive z-score means that the score is
  • Higher than the mean Correct
230
A score of 50 lies 2 standard deviations above a mean of 30.What is the value of the standard deviation?
  • 10 Correct
49
A special type of function where the domain is a set of consecutive integers.
  • sequence Correct
283
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?
  • 84 Correct
173
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?
  • 95 Correct
302
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
220
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
284
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
193
According to Hilary Mason which is NOT a skill that a good data scientist must cultivate.
  • critical thinking Correct
48
Addition and subtraction of matrices only is possible if two are more matrices.
  • Have same sizes Correct
208
Algorithm analysisis an important part of a broader_____________.
  • computational complexity theory Correct
253
All representations are ________.
  • imperfect Correct
41
An array is a good example of _________data structure.
  • Static Correct
58
1
An example of an abstract computer.
  • Turing machine Correct
62
1
Another term for an empty set.
  • null Correct
185
1
Another term for text analytics.
  • text mining Correct
250
1
Any way to get new expressions from old ones
  • inference Correct
47
1
Any way to get new expressions from old ones.
  • inference Correct
230
1
As of 2014,there are _______million of tweets a day.
  • 500 Correct
56
Classification table is also called ________
  • confusion matrix Correct
134
Data involving two variables.
  • bivariate Correct
66
Data is NOT information unless we add_________.
  • analytics Correct
47
Displays the performance of a model and enables a comparison to be made with other models.
  • ROC curve Correct
42
Earlier name fordata science.
  • datalogy Correct
48
Empirical rule for a normal distribution lie ______% of data with 1 standard deviation below and above the mean.
  • 68 Correct
43
Empirical rule for a normal distribution that is 2 standard deviations above and below the mean is ________% of data.
  • 95 Correct
59
Empirical rule for a normal distribution that is 3 standard deviations above and below the mean covers ______% of the data.
  • 99.7 Correct
46
Exabyte means ________bytes
  • billion billion Correct
91
1
Example of a data product.
  • google map Correct
41
He coined the term "data scientist"
  • DJ Patil Correct
42
He coined the term “analysis of algorithms”.
  • Donald Knuth Correct
135
1
He is someone who asks interesting questions on formal and informal theory.
  • data scientist Correct
39
He pointed out that until 2003 ,all of mankind had generated just 5 exabytes of data
  • Eric Schmidt Correct
134
He proposed the use of a penalized likehood function.
  • Firth Correct
241
1
He said that “ In mathematics the art of proposing a question must be held of higher value than solving it”.
  • Georg Cantor Correct
81
How many bytes of data are generated every two days in today's world?
  • 5 exabytes Correct
45
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
  • {A,C,I,S,T} Correct
45
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 ) {2,5) } Correct
47
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
81
1
If the standard deviation of a distribution is 3.5, the variance is
  • 12.25 Correct
41
If there are 103 scores the median is equal to the _____ranked score.
  • 52nd Correct
243
In the equation of the regression line represented by Y= 1.24 X + 6.9 if X=2 then Y =?
  • 9.38 Correct
51
Inα =babaa β =a^6b^5bb, what is the length of the concatenation of the two strings?
  • 18 Correct
43
It corresponds to the case where the dependent variable has more than 2 categories.
  • multinomial logit model Correct
132
1
It does NOT require the assumption that the parameters are normally distributed
  • INTERNIST Correct
62
1
It does NOT require the assumption that the parameters are normally distributed.
  • profile likehood Correct
78
2
It enables the performance of a model and enables a comparison to be made with other models.
  • ROC Correct
82
It expands available data enormously since there is so much more text being generated than numbers.
  • Text mining Correct
94
It expands available data enormously.
  • text mining Correct
95
It extracts meaningful numerical indices from information and make it available to statistical andmachine learning.
  • Text analytics Correct
47
It has the goal of discovering useful information to support decision making.
  • data analysis Correct
42
It includes identifying groups of data records
  • cluster analysis Correct
133
It includes identifying groups of data records.
  • cluster analysis Correct
51
It involves a commitment in viewing the world in terms of individual entities and relations between them.
  • logic Correct
59
1
It involves a commitment in viewing the world in terms of individual entities and relations.
  • logic Correct
41
It is a free software programming language.
  • R-programming Correct
40
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