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[ECO452] The long term variations about the trend usually caused by disruption in services or socio-economic activities, cyclical variations are commonly associated with economic cycles, successive boom and slumps in the economy is referred to as:
Cyclical Variation

[ECO452] What happens when a null hypothesis is rejected?
Accept the alternative hypothesis

[ECO452] The Z-distribution approaches what distribution:
Normal Distribution

[ECO452] What refers to short term fluctuation or changes that occur at regular intervals less than a year:
Seasonal Variation

[ECO452] The Z-distribution is for what sample size:
Large sample

[ECO452] What deals with procedures for making inferences ·about the characteristics that describe the large group:
Inferential statistics

[ECO452] What refers to sequence of observations that gives information on how data has been behaving in the past?
Time series

[ECO452] The joint hypothesis can be tested by the use of
ANOVA

[ECO452] Inferential statistics (or statistical tests) are categorized into what groups:
Two groups

[ECO452] What refers to the general direction in which the graph of time series appears to be going over a long period of time:
Secular Trend