5) What is ANOVA? Analysis of variance (ANOVA) tests the hypothesis that the means of two or more populations are equal. ANOVAs assess the importance of one or more factors by comparing the response variable means at the different factor levels. The null hypothesis states that all population means (factor level means) are equal while the alternative hypothesis states that at least one is different. Note: Answer any two questions. Each question carries 5 marks (Word limits 500) Q. 2 examine the merits and limitations of the observation method In collecting material Illustrate your answer with sultable examples. Advantages of Observation: (1) Simplest Method: Observation 1 is probably the nlest method data collection It does not real