1.a wave has a wavelength of .5 m and a velocity of 20 m/s, its frequency is
2a wave has a wavelength of 2 m and a frequency of 30 hz, its velocity is /s
3.a wave with a period of .2 secs has a frequency of hz

Ameteorologist is studying the monthly rainfall in a section of the brazilian rainforest. she recorded the monthly rainfall, in inches, for last year. they were: 10.4, 10.3, 11.7, 11.1, 8.0, 4.4, 2.6, 1.8, 2.5, 4.4, 7.3, 9.5 fill in the missing values in the formula. what is the variance?