. Johnny wanted to know how many days per week people in his class exercise, so he asked 3 of his friends. The answers he got were 1, 3 and 5. Based on this, which of the following is true about the results Johnny found? (Hint: Do the numbers [1,3,5] represent a population or a sample?)

Johnny wanted to know how many days per week people in his class exercise, so he asked 3 of his friends -class = population and 3 friends = simple The answers he got were 1, 3 and 5. so you have (1,3,5) mean = 1+3+5 / 3 = 3 *you are working with simple so mean = x̄ variance = 8 standard deviation = 2 *you are working with simple so standard deviation= s