a. find the mean and standard deviation of the following set of
ungrouped sample data: 4,...
a. find the mean and standard deviation of the following set of
ungrouped sample data: 4, 3, 5, 2, 3, 1, 2, 5, 3, 1, 5, 4, 6, 4, 5,
1, 3, 3, 7, 8, 7, 5, 4, 3, 7, 8, 4, 6, 9, 10, 10, 9, 6, 4, 6.
b. What proportion of the measurements lies within one standard
deviation of the mean? Within two standard deviations of the mean?
Within three standard deviations?
c. Based on part (b),...
(a) Find the mean, median, mode and
standard deviation of the following set of ungrouped sample...
(a) Find the mean, median, mode and
standard deviation of the following set of ungrouped sample
data:
4, 2, 3, 5, 3, 1, 6, 4, 2, 3
(b) What proportion of the
measurements lies within 1 standard deviation of the mean? Within 2
standard deviations of the mean? Within 3 standard
deviations?
(c) Based on your answers to part
(b), would you conjecture that the histogram is approximately bell
shaped? Explain.
1.Given set of data: 13 16 19 14 21 17 , determine mean,
standard deviation, &...
1.Given set of data: 13 16 19 14 21 17 , determine mean,
standard deviation, & make a box plot. How would the standard
deviation change if these were repeated measurements of the same
item?
In Test A, suppose you make 100 experimental measurements of
some quantity and then calculate mean,...
In Test A, suppose you make 100 experimental measurements of
some quantity and then calculate mean, standard deviation, and
standard error of the numbers you obtain. In Test B, suppose you
make 1000 experimental measurements of the same quantity and you
again calculate mean, standard deviation, and standard error.
How would you expect the mean, standard deviation, and standard
errors found in Test A and Test B to compare? (You can use the
Excel simulation and change the "Number of...
The mean and standard deviation of a random sample of n
measurements are equal to 33.9...
The mean and standard deviation of a random sample of n
measurements are equal to 33.9 and 3.3, respectively.
a. Find the lower limit, the upper limit and the margin of error
for a 95% confidence interval for m if n = 100.
b. Find the lower limit, the upper limit and the margin of error
for a 95% confidence interval for m if n = 400.