CHEM 162 EXPERIMENT LAB 1 ACTUAL TEST
PAPER 2026 COMPLETE QUESTIONS AND
SOLUTIONS GRADED A+
◉ Linear regression (also called linear least-squares regression) is a
method used to calculate the ___________ line that describes the
mathematical relationship between two experimental variables that
have a linear relationship. Answer: best fit
◉ When graphing two variables to find their relationship, the
________- variable (the one you typically have control over the in the
experiment) is plotted on the
________________
axis. Answer: independent, X
◉ On the y-axis, the dependent variable is plotted. This is typically
the variable that is ___________ during the experiment (ex.
temperature or pH measurement). Answer: measured
◉ A Logger Pro graph will display a text box with the results of the
linear regression. The program displays a number of things such as:
the slope of the graph (represented by
__
, ), the y-intercept of the data (represented by
____
) and the correlation of the data. Answer: m,b
◉ For this lab, students complete the experiment (data collection) in
class as a _________, but complete the rest of the assignment
(calculations and questions) independently. Answer: group
◉ The purpose of this lab is to introduce you to statistical analysis
and the tools necessary to analyze the data you will collect in other
experiments this semester.
In ___________-
you will see the topics and tools that you will need to finish this and
other lab reports this semester (ex. definitions and equations of
different items such as mean and standard deviation, rules for
significant figures and rounding, etc.). Appendix II provides a
tutorial in the use of_______
(this program is not required, but is very useful for repetitive
calculations). Answer: Appendix 1, excel
◉ The popcorn kernels used in this experiment have been stored in
the first floor laboratory preparation area. They are to be regarded
as laboratory ________ (and are not to be consumed!). Answer:
chemicals
PAPER 2026 COMPLETE QUESTIONS AND
SOLUTIONS GRADED A+
◉ Linear regression (also called linear least-squares regression) is a
method used to calculate the ___________ line that describes the
mathematical relationship between two experimental variables that
have a linear relationship. Answer: best fit
◉ When graphing two variables to find their relationship, the
________- variable (the one you typically have control over the in the
experiment) is plotted on the
________________
axis. Answer: independent, X
◉ On the y-axis, the dependent variable is plotted. This is typically
the variable that is ___________ during the experiment (ex.
temperature or pH measurement). Answer: measured
◉ A Logger Pro graph will display a text box with the results of the
linear regression. The program displays a number of things such as:
the slope of the graph (represented by
__
, ), the y-intercept of the data (represented by
____
) and the correlation of the data. Answer: m,b
◉ For this lab, students complete the experiment (data collection) in
class as a _________, but complete the rest of the assignment
(calculations and questions) independently. Answer: group
◉ The purpose of this lab is to introduce you to statistical analysis
and the tools necessary to analyze the data you will collect in other
experiments this semester.
In ___________-
you will see the topics and tools that you will need to finish this and
other lab reports this semester (ex. definitions and equations of
different items such as mean and standard deviation, rules for
significant figures and rounding, etc.). Appendix II provides a
tutorial in the use of_______
(this program is not required, but is very useful for repetitive
calculations). Answer: Appendix 1, excel
◉ The popcorn kernels used in this experiment have been stored in
the first floor laboratory preparation area. They are to be regarded
as laboratory ________ (and are not to be consumed!). Answer:
chemicals
