BADM /
211 Exam 1 Questions With Correct Answers
/ // // // // // //
What //does //business //analytics //mean?
the /
/science /
/of /
/transforming /
/data /
/into /
/insights /
/and /
/models /
/that //lead //to //better //decisions //and //add //value //to //individuals, //companies //and //societies.
What //is //machine //learning?
algorithms //that //can //learn //rules //and //associations //from //the //data; //artificial //intelligence
What //are //the //Four //V's //of //Big //Data?
1. //Volume //(size)
2. //Velocity //(speed)
3. //Variety //(structured //or //not)
4. //Veracity //(quality)
What //is //a //categorical //value?
Nominal /
/or /
/Ordinal; /
/can /
/be /
/coded //either //using //text //or //as //integers, //if //coded //using //text, //then //we //must //convert //them
//before //starting //our //analysis
Nominal //Values
,data /
/has /
/no //order, //we //must //create //dummy //variables //consistent //of //0 //and //1's //(male //and //female)
Ordinal //Values
data /
/has /
/an //order, //we //just //replace //text //with //integers //preserving //the //ranking //between //categories
What //is //a //predictor //variable?
usually /
/denoted /
/by //
x, /
/used /
/as /
/an /
/input /
/into //
a/
/predictive /
/model, /
/also /
/called //
a //feature, //input //variable, //independent //variable, //or //from //a //database //perspective, //a //field.
What //are //various //terms //used //for //observations?
instance, //sample, //example, //case, //record, //pattern, //or //row.
What //is //a //classification //problem?
The /
/process /
/of /
/finding //
a/
/model /
/that /
/describes /
, /and /
/distinguishes /
/data /
/classes /
/and /
/concepts. /
/The /
/problem /
/requires /
/identifying /
/which /
/category /
/an /
/observation /
/belongs /
/to /
/on /
/the /
/basis //of //a //training //set //of //data //containing //observations //whose //categories //are //known. //Ex.
//wanting //to //predict //the //probability //of //rain //tomorrow.
What //is //a //prediction //problem?
Captures /
/many /
/common /
/machine /
/learning /
/problems, /
/goal /
/is /
/to /
/give /
/the /
/correct /
/label /
/to /
/an /
/instance; /
211 Exam 1 Questions With Correct Answers
/ // // // // // //
What //does //business //analytics //mean?
the /
/science /
/of /
/transforming /
/data /
/into /
/insights /
/and /
/models /
/that //lead //to //better //decisions //and //add //value //to //individuals, //companies //and //societies.
What //is //machine //learning?
algorithms //that //can //learn //rules //and //associations //from //the //data; //artificial //intelligence
What //are //the //Four //V's //of //Big //Data?
1. //Volume //(size)
2. //Velocity //(speed)
3. //Variety //(structured //or //not)
4. //Veracity //(quality)
What //is //a //categorical //value?
Nominal /
/or /
/Ordinal; /
/can /
/be /
/coded //either //using //text //or //as //integers, //if //coded //using //text, //then //we //must //convert //them
//before //starting //our //analysis
Nominal //Values
,data /
/has /
/no //order, //we //must //create //dummy //variables //consistent //of //0 //and //1's //(male //and //female)
Ordinal //Values
data /
/has /
/an //order, //we //just //replace //text //with //integers //preserving //the //ranking //between //categories
What //is //a //predictor //variable?
usually /
/denoted /
/by //
x, /
/used /
/as /
/an /
/input /
/into //
a/
/predictive /
/model, /
/also /
/called //
a //feature, //input //variable, //independent //variable, //or //from //a //database //perspective, //a //field.
What //are //various //terms //used //for //observations?
instance, //sample, //example, //case, //record, //pattern, //or //row.
What //is //a //classification //problem?
The /
/process /
/of /
/finding //
a/
/model /
/that /
/describes /
, /and /
/distinguishes /
/data /
/classes /
/and /
/concepts. /
/The /
/problem /
/requires /
/identifying /
/which /
/category /
/an /
/observation /
/belongs /
/to /
/on /
/the /
/basis //of //a //training //set //of //data //containing //observations //whose //categories //are //known. //Ex.
//wanting //to //predict //the //probability //of //rain //tomorrow.
What //is //a //prediction //problem?
Captures /
/many /
/common /
/machine /
/learning /
/problems, /
/goal /
/is /
/to /
/give /
/the /
/correct /
/label /
/to /
/an /
/instance; /
