Answer:
In this case Jack is only using a part or sample of the total population, so he is doing a sample standard deviation. When you use the total population you are doing a population standard deviation, otherwise, it’s always going to be the sample standard deviation.
Both deviations have different notations. The notation for this type of standard deviation (the one used by Jack) is:
"n" for the number of observations (lowercase)
"x-bar" for the average of the sample
"s" for the standard deviation
"s^2" for the variance
answer : 0.125
explanation: it’s actually really easy all you have to do is
take the fraction and divide it like :
1/8 = 1 divided by 8 = 0.125
Answer:
the median is 99
Step-by-step explanation:
(lowest) 35, 42, 72, <u>99</u>, 119, 120, 120.5 (highest)
the median is the middle #
the middle # is 99
You will lose money. Because $50 to make subtract $45 to sell (50-45) leaves you losing $5.
Answer:Each pair of alternate interior angles is congruent, and each pair of alternate exterior angles is congruent.
Step-by-step explanation: