Use your calculator to compute the mean, median, range, sample standard deviation and sample
variance for the six percent-returns (
Return % column
) of both stock portfolios (
do not convert the values
in the returns column to decimal form
). Round your answers to 3 decimal places.
Refer to page 169-170 for
instructions on how to compute descriptive statistics on the TI-84/83.
Compare the final values of the portfolio during the six-month period.
Describe any trend or trends?
Compare the range and the standard deviation of the six returns of both portfolios.
portfolio is considered more volatile?
Calories in Bagels:
the average number of calories in a regular-size bagel is 240.
If the standard
deviation is 38 calories, compute the following using Chebyshev’s theorem:
Find the range in which at least 75% of the data will lie.
At least what percentage of the values will fall between 126 and 354 calories?
Grams of fat in McDonald’s breakfast:
The following data represent the number of grams of fat in a
sample of breakfast meals
offered at McDonald’s.
(Source: McDonald’s Corporation)
Identify the variable in this data set.
Is the variable quantitative or qualitative? _________________
Define the sample used in this data set.
Define the population for the given data.
Compute the following and round to 1 decimal place:
= __________ ,
s = ____________,
Q1 = ___________,
Median = __________ Q3=__________