Answer:
second: (2.2,-1.4)
third: (2.2,-1.35)
Step-by-step explanation:
Answer:
Sue is 6 and Mary is 10
Step-by-step explanation:
let Sue's age be x then Mary is x + 4 and the sum of their ages is
x + x + 4 = 16
2x + 4 = 16 ( subtract 4 from both sides )
2x = 12 ( divide both sides by 2 )
x = 6
x + 4 = 6 + 4 = 10
then Mary is 10 and Sue is 6
Answer:
median
Step-by-step explanation:
median is the number appearing at the centre or middle after the given numbers.mean is average. mode is the number that appears more times than the others. hope it helps
Answer:
False, they have the same standard deviation
Step-by-step explanation:
Standard deviation is the distance each data value is from the mean.
While the mean of each data set will be different, the distance each data value is from this mean will be the same. This is because each set goes sequentially from 1 to 12, or from 101 to 112. The average distance from the mean will have to be the same.
To verify, using a graphing calculator, the standard deviation of the first set is 3.45. The standard deviation of the second set is also 3.45.
