Some students are good in mathematics and others are better at
reading or writing. The question...
Some students are good in mathematics and others are better at
reading or writing. The question is whether there is any
relationship between a student’s ability in math and his/her
ability in reading or writing. The SAT, a standardized test for
college admissions that is widely used in the United States, has
three sections, Math, Critical Reading, and Writing. The table
below contains SAT Math, Writing, and Critical Reading test scores
for 20 randomly chosen students accepted by a university....
Using R, answer the following question. The accompanying data
set contains quiz scores for 12 students...
Using R, answer the following question. The accompanying data
set contains quiz scores for 12 students in a chemistry class: 18,
15, 5, 8, 15, 20, 2, 16, 10, 12, 20, 15.
Find a measure of central tendency that separates the data into
two groups such that each group consists of 50% of the scores above
and 50% of the scores below that measure.
Find a measure of central tendency that represents the average
of the 12 quiz scores.
Find...
Assume you are injection molding plastics parts using a
polylactic acid. In the process, the resin...
Assume you are injection molding plastics parts using a
polylactic acid. In the process, the resin is heated from room
temperature (25 oC) to 200 oC. The cycle time
is 5 second, and shot weight is 0.05 kg. Please calculate the heat
input per hour of the process. The heat capacity data of PLA can be
found from the excel file. The PLA used has 10, 000g/mol molecular
weight (weight-average), Tg around 59.35 oC
and melting point Tm at 160...
The following data set represents students' scores on a
quiz. The best possible score was a...
The following data set represents students' scores on a
quiz. The best possible score was a 20. Use the data to generate
answers to the next eight (8) questions (Q28-Q35).
4, 4, 10, 12, 2, 20, 5, 12, 12, 5, 9, 9, 20, 13, 6, 6,
15, 15, 15, 15
What is the mean? (Round all answers for this question to the
hundredths place - X.XX)
What is the median?
What is the mode?
What is the range?
What is...
Data set for ages of students in stats class:
17, 18, 18, 18, 18, 18, 18,...
Data set for ages of students in stats class:
17, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,19,
20, 20, 20, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22, 23, 23, 23, 23,
24, 25, 25, 25, 26, 26, 27, 28, 28, 28, 28, 29, 29, 32, 36, 42
1) Compute the 5-number summary and create a modified box-plot,
using the inner-quartile range to identify any outliers.