多 EXample1 osA university investigates the salary of its graduates five years after graduating Response Variable: Type Current salary Measured Explanatory Variables: Ty ype of analysIs s Starting Salary Measured y measured Class of Degree' Measured v Attribute(5)* Graduate's Gender Measured v Attribute(2)*
❖ Example 1 A university investigates the salary of its graduates five years after graduating
, Example 2 66 CREDIT Scenario Response variable Type,测 The amount borrowed on credit Measured ExplanatoryVariables Customer's age Measured y Measured Household Income(E per annum) Measured y measured Estimated monthly outgoing Measured v Measured Does the customer own their own house? Measured v Attribute( 2) The Region in which the customer is resident Measured v Attribute(5
❖ Example 2 CREDIT Scenario
15.3 EXPLORING RELATIONSHIPS 1 令 MEASURED RESPONSE VARIABLE一 ATTRIBUTE EXPLANATORY VARIABLE ☆ Definition s There is a relationship between a measured response and an attribute explanatory variable if the average value of the response is dependent on the level of the attribute explanatory variable
15.3 EXPLORING RELATIONSHIPS 1 ❖ MEASURED RESPONSE VARIABLE ---- ATTRIBUTE EXPLANATORY VARIABLE ❖ Definition There is a relationship between a measured response and an attribute explanatory variable if the average value of the response is dependent on the level of the attribute explanatory variable
B There is no link 6 Given a measured response and an attribute explanatory variable with two levels, 1&2. If the statistical distribution of the response variable for attribute level 1 and attribute level 2 are exactly the same then the level of the attribute variable has no influence on the value response Attribute eve 1 Attn bute leve 2 ,L,,,,,, Igure
❖ There is no link Given a measured response and an attribute explanatory variable with two levels, 1 & 2. If the statistical distribution of the response variable for attribute level 1 and attribute level 2 are exactly the same then the level of the attribute variable has no influence on the value response
There is a link o6 Given a measured response and an attribute explanatory variable with two levels, 1 &2. If the statistical distribution of the response variable for attribute level 1 and attribute level 2 have different means then the level of the attribute variable does influence the response varlable. Attribute leve 1 Attrbute level 2 Figure 4
❖ There is a link Given a measured response and an attribute explanatory variable with two levels, 1 & 2. If the statistical distribution of the response variable for attribute level 1 and attribute level 2 have different means then the level of the attribute variable does influence the response variable