4. (9 pts) The following is some information for a sample of people:

Name	Gender	Years of experience	Annual income
Liam	Male	1-5	30,000
Emma	Female	6-10	25,000
Noah	Male	More than 10	40,000
Olivia	Female	6-10	35,000
William	Male	1-5	40,000
Ava	Female	1-5	39,000

1. Which statistical method (one-way ANOVA or two-way ANOVA) should be used to study how "Years of experience" affects "Annual income". Two-way ANOVA.????
2. Which statistical method (one-way ANOVA or two-way ANOVA) should be used to study how "Gender" affects "Annual income".
3. Which statistical method (one-way ANOVA or two-way ANOVA) should be used to study how "Gender" and "Years of experience" affect "Annual income".