data analytics quiz1

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