Lecture material review
Econ 15A labs
Calvin Cochran
Parameter vs statistic
A parameter is the result of using all members
of a population to measure something about
the population
99% of the time, this something will be the
mean (or a measure of centra
Worksheet 3
I. Draw a boxplot for the following data (each number is the number of rainy days in
various years in CA): 5, 1, 8, 9, 2, 4, 9, 30
II. Two gas station owners want to know the dispersion of the number of cars that buy
gas there per day in 2014.
Worksheet Week 4
I. A gas station owner counted the number of cars that bought gas at their station on 10
random days, and these were the number of cars that bought gas each day:
39, 40, 41, 44, 50, 51, 52, 54, 54, 55
i. Find the AAD for this data:
ii.Fin
Worksheet 3
I. A gas station owner counted the number of cars that bought gas at their station on 10
random days, and these were the number of cars that bought gas each day:
39, 40, 41, 44, 50, 51, 52, 54, 54, 55
We first find the mean by adding the score
Worksheet 3
I. Draw a boxplot for the following data (each number is the number of rainy days in
various years in CA): 5, 1, 8, 9, 2, 4, 9, 30
First, rearrange from least to greatest: 1,2,4, 5, 8, 9, 9, 30
Then, divide this data into two groups: (1,2,4,5)
NAME: _
I.D.: _
TEST ONE
PROBABILITY AND STATISTICS, ECON 15A
OCTOBER 9, 2015
Use the following for questions 1-7. A researcher is investigating alertness. She asked 20 subjects who habitually had either 6, 7, 8, or 9
hours of sleep every night to complet