The arithmetic average is (275+283)/2 = 279
275, 277, 279, 281 and 283.
It is 401.
Around that, yes. Numbers average between 283 or 285 days, but neither is right or wrong over the other.
The average of a set of numbers is their sum divided by how many there are. So, the average here is (250 + 310 + 275 + 195) / 4 and you can work that out.
275/56+4.9107hrs
Jackie Robinson had a .275 batting average in 1956
283 days is about 9.3 months, or about 9 months and 10 days. A month is not a fixed number of days, and the average is 30.4 days.
275
275
Katerndahl, David A. "Panic Attacks and Panic Disorder." Journal of Family Practice 43 (September 1996): 275-283.
283 is a prime number. The factors of 283 are 1 and 283. The factor pair of 283 is 1 x 283. The proper factors of 283 are 1, or if the definition you are using excludes 1, there are no proper factors. The only prime factor of 283 is 283. The distinct prime factor of 283 is 283. The prime factorization of 283 is 283 or, sometimes to make it clear that it is prime, 1 x 283.
The New York Yankees had a team batting average of .283 in 2009.