When a graph is periodic, its shape repeats, again and again. think of at least five events in your life that are periodic and whose periods are long. for example, an event might repeat only once or twice a year, or even once a month. what is the period and frequency of each event? which incidents repeat most frequently? which repeat least frequently?

The event that repeats in my life are
1. Birthday celebration
period = 1 day
frequency = 1 day/year

2. School term. I have three terms ever year and each takes 3 months.
period = 3 months
frequency = 3 times/year

3. Attending to church. I go to church every Saturday.
period = 1 day
Frequency = 1 day/weak

4. I go for holiday vacation for a month once a year. 
Period = 1 month
Frequency = 1 month/year

5. I visit my grandparent two times a year. 
Period = 1 week
Frequency = 2 weeks/year

Which incidents repeat most frequently? 
 Attending to church. I go to church every Saturday.

Which repeat least frequently?
Birthday celebration