BCS Data Analysis Tools Exam Questions
With Correct Answers
In /a /distribution /that /is /positively /skewed, /which /of /the /following /is /TYPICALLY /TRUE? /
A /The /standard /deviation /is /greater /than /the /range. /
B /The /median /is /greater /than /the /mean. /
C /The /median /and /mean /are /equal. /
D /The /mean /is /greater /than /the /median. /- /correct /answer(s) /✔✔ /D /
The /mean /is /usually /greater /than /the /median, /which /is /always /greater /than /the /mode /in
/positively /skewed /records.
R /can /easily /be /extended /via /what? /
A /Models. /
B /Packages. /
C /Slides. /
D /Pockets /- /correct /answer(s) /✔✔ /B /
R /is /only /extendable /as /packages.
What /is /the /median /in /the /following /set /of /data? /
1, /2, /2, /3, /5, /6, /9 /
A /2. /
B /3. /
C /4. /
D /5. /- /correct /answer(s) /✔✔ /B
, The /median /of /a /set /of /numbers /is /the /number /in /the /middle.
What /measure /will /always /change /if /a /single /value /in /a /dataset /changes? /
A /Median. /
B /Mode. /
C /Mean. /
D /All /of /these. /- /correct /answer(s) /✔✔ /C /
The /mean /is /the /value /obtained /by /dividing /the /sum /of /several /quantities /by /the /number /of
/quantities /there /are. /If /one /of /the /quantities /changes, /the /mean /will /ultimately /change.
What /type /of /join /is /used /to /combine /the /result-set /of /two /or /more /SELECT /statements? /
A /Full. /
B /Outer. /
C /Union. /
D /Inner. /- /correct /answer(s) /✔✔ /C /
Only /a /Union /join /is /used /to /perform /this /function.
What /will /be /reduced /if /multiple /disparate /datasets /are /integrated? /A /Data /availability. /
B /Data /collaboration. /
C /Data /complexity. /
D /Data /integrity. /- /correct /answer(s) /✔✔ /C /
Data /integration /reduces /complexity /by /providing /a /unified /view /of /the /data /taken /from
/multiple /sources
When /preparing /data /for /analysis /to /improve /accuracy, /quality /and /usefulness, /which /of /the
/following /are /NOT /suitable /ways /to /respond /to /an /error? /
a) /Accept. /
With Correct Answers
In /a /distribution /that /is /positively /skewed, /which /of /the /following /is /TYPICALLY /TRUE? /
A /The /standard /deviation /is /greater /than /the /range. /
B /The /median /is /greater /than /the /mean. /
C /The /median /and /mean /are /equal. /
D /The /mean /is /greater /than /the /median. /- /correct /answer(s) /✔✔ /D /
The /mean /is /usually /greater /than /the /median, /which /is /always /greater /than /the /mode /in
/positively /skewed /records.
R /can /easily /be /extended /via /what? /
A /Models. /
B /Packages. /
C /Slides. /
D /Pockets /- /correct /answer(s) /✔✔ /B /
R /is /only /extendable /as /packages.
What /is /the /median /in /the /following /set /of /data? /
1, /2, /2, /3, /5, /6, /9 /
A /2. /
B /3. /
C /4. /
D /5. /- /correct /answer(s) /✔✔ /B
, The /median /of /a /set /of /numbers /is /the /number /in /the /middle.
What /measure /will /always /change /if /a /single /value /in /a /dataset /changes? /
A /Median. /
B /Mode. /
C /Mean. /
D /All /of /these. /- /correct /answer(s) /✔✔ /C /
The /mean /is /the /value /obtained /by /dividing /the /sum /of /several /quantities /by /the /number /of
/quantities /there /are. /If /one /of /the /quantities /changes, /the /mean /will /ultimately /change.
What /type /of /join /is /used /to /combine /the /result-set /of /two /or /more /SELECT /statements? /
A /Full. /
B /Outer. /
C /Union. /
D /Inner. /- /correct /answer(s) /✔✔ /C /
Only /a /Union /join /is /used /to /perform /this /function.
What /will /be /reduced /if /multiple /disparate /datasets /are /integrated? /A /Data /availability. /
B /Data /collaboration. /
C /Data /complexity. /
D /Data /integrity. /- /correct /answer(s) /✔✔ /C /
Data /integration /reduces /complexity /by /providing /a /unified /view /of /the /data /taken /from
/multiple /sources
When /preparing /data /for /analysis /to /improve /accuracy, /quality /and /usefulness, /which /of /the
/following /are /NOT /suitable /ways /to /respond /to /an /error? /
a) /Accept. /
