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WorksheetsIA2: Student experiment
Total questions: 11
Worksheet time: 6mins
The rationale for your experiment should be _____________.
specific
interesting
effective
considered
The research question should be _____________ and relevant.
interesting
specific
considered
conclusive
The variable that you change is called the __________________.
Independent variable
Dependent variable
Controlled variable
Extraneous variable
The dependent variable is _________________.
unchanged
the data that you collect
linear
the variable that increases the most
Which of the following best increases the reliability of your data?
The use of accurate equipment
Elimination of outliers
Conducting experiment carefully
Increase replicates
Which of the following will reduce the validity of data?
Extraneous variables
Too many experimental groups
Low number of replicates
Absence of statistical tests
A variable that was not accounted for when the experiment was designed is known as ______________________.
an extraneous variable
a controlled variable
an independent variable
a dependent variable
A Student's t-test will generate a ______________.
t-value
k-value
R-value
p-value
A Student's t-test will determine ____________________.
if the data is statistically significant
if there is a difference between two groups
if there is a standard error
the validity of the data
A p-value smaller than 0.05 (p<0.05) shows that there is _______________.
no statistically significant difference between two groups.
a statistically significant difference between two groups.
a significance in the data.
valid and reliable data.
Which of the following best describes error in data?
An error can occur in the data if the scientist has not collected the data carefully and accurately.
An error has occurred if one of the flasks in an experiment is dropped on the floor and smashed.
An error is the difference between observed values and what is true in nature. It will make the data invalid.
An error is the difference between observed values and what is true in nature. It is always present in data and can be either small or large.
