Consider a data set containing the following values.
88 96 72 84 95 100 92 90
The mean...
Mathematics, 21.01.2021 22:40 emilypk1998
Consider a data set containing the following values.
88 96 72 84 95 100 92 90
The mean of the preceding values is 89.625. The deviations from the mean have been calculated as follows:
-1.625 6.375 -17.625 -5.625 5.375 10.375 2.375 0.375
Required:
a. If this is sample data, the sample variance is ?? and the sample standard deviation is??
b. If this is population data, the population variance is?? and the population standard deviation is??
c. Suppose the largest value of 106 in the data was misrecorded as 100. If you were to recalculate the variance and standard deviation with the 100 instead of the 106, your new values for the variance and standard deviation would be?
Answers: 3
Mathematics, 21.06.2019 18:40, miguel3maroghi
Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.
Answers: 3