TOPIC 9 - RELATIONSHIPS WITH CATEGORICAL VARIABLES
(a)
Category pair | Tally |
---|---|
Retain, liberal |
|
Retain, moderate | |
Retain, conservative | |
Abolish, liberal | |
Abolish, moderate | |
Abolish, conservative |
(b)
Retain | Abolish | |
---|---|---|
Liberal |
| |
Moderate | ||
Conservative |
9-2: Age and Political Ideology
(a) 0.205
(b) 0.388
(c) 0.406
(d) 0.280
(e) 0.473
(f) 0.247
(g)
Series 1 - Liberal
Series 2 - Moderate
Series 3 - Conservative
(h) (Asks for interpretation)
(i) 0.473
(j) 0.199
(k) 0.097
(a) (Asks for prediction)
(b) AZT: 0.079; HIV: 0.250
(c) 3.23
(d) (Asks for interpretation)
9-4: Hypothetical Hospital Recovery Rates
(a) A: 0.8; B: 0.7; B saves the higher percentage.
(b) Are you convinced?
(c) A: 0.983; B: 0.967; A saves the higher percentage.
(d) A: 0.525; B: 0.3; A saves the higher percentage.
(e) Hospital A tends to treat the large majority of patients in "poor"
condition. Since these patients are more likely to die than those in "good"
condition, A's overall survival rate is lower than B's despite being higher for
each type of patient.
(f) Hospital A is preferable regardless of one's condition.
9-5: Hypothetical Employee Retention Predictions
(a) 0.16
(b) 0.16
(c) no
(d) no
(e)
Series 1 - Predicted to stay
Series 2 - Predicted to leave
(f)
Series 1 - Predicted to stay
Series 2 - Predicted to leave