Worksheetsdata analytics quiz1
Total questions: 10
Worksheet time: 5mins
what data analytics provides us with
hidden insights
reports
market analysis
all the above
...................data is information that does not reside in a relational database but that have some organizational properties that make it easier to analyze
structured
semi structured
unstructured
none of the above
.....................errors are those that occur when the person enters a wrong value on purpose.
data entry error
null error
delibrate error
system error
Binary attribute are
This takes only two values. In general, these values will be 0 and 1 and .they can be coded as one bit
The natural environment of a certain species
Systems that can be used without knowledge of internal operations
None of these
Data set {brown, black, blue, green , red} is example of
Continuous attribute
Ordinal attribute
Numeric attribute
Nominal attribute
Which of the following is NOT example of ordinal attributes
Zip codes
Ordered numbers
Movie ratings
Military ranks
Which of the following is NOT a data quality related issue?
Missing values
Outlier records
Duplicate records
Attribute value range
Which of these measures are used to analyze the central tendency of data?
Mean and Normal Distribution
Mean, Median and Mode
Standard Deviation, Range and Mean
Median, Range and Normal Distribution
If a positively skewed distribution has a median of 50, which of the following statement is true?
A) Mean is greater than 50
B) Mean is less than 50
C) Mode is less than 50
D) Both A and B
E) Both A and C
Which of the following is a possible value for the median of the below distribution?
32
26
17
40
