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What else can I help you with?
How many blocks will there be in her experiment?
A researcher wishes to design a fully blocked experiment with groups of subjects representing every possible combination of 1 explanatory variable (control vs. treatment) and 3 other variables (male vs. female, old vs. young, healthy vs. ill) for a total of 4 variables. 16
What is the difference between standard error and standard deviation?
Standard error is the difference between a researcher's actual findings and their expected findings. Standard error measures the accuracy of one's predictions. Standard deviation is the difference between the results of one's experiment as compared with other results within that experiment. Standard deviation is used to measure the consistency of one's experiment.
What variable systematically manipulated by the researcher?
The independent variable is the one which the researcher controls and manipulates. On a graph this is the 'x' axis.
If a researcher conducts a t-test on a single group mean and if df equals 19 how many subjects were in the sample?
20
Why does a researcher want to go from a normal distribution to a standard normal distribution?
A researcher wants to go from a normal distribution to a standard normal distribution because the latter allows him/her to make the correspondence between the area and the probability. Though events in the real world rarely follow a standard normal distribution, z-scores are convenient calculations of area that can be used with any/all normal distributions. Meaning: once a researcher has translated raw data into a standard normal distribution (z-score), he/she can then find its associated probability.
A researcher performing an experiment introduces changes in an response variable and tries to explain or bring about resulting changes in the explanatory variable?
True
Does an observational study or a designed experiment allow the researcher to claim causation between and explanatory variable and a response variable?
designed experiment
When the experiment is complete what does the researcher do?
Repeats the experiment for validity
What is the name of the person who conducts experiment?
A person who conducts an experiment is typically called a "researcher" or an "experimenter."
What part of an experiment does the researcher manipulate?
The researcher manipulates the independent variable in an experiment. This is the variable that is intentionally changed to observe its effect on the dependent variable.
What difference between an observational study and an experiment?
in an experiment, the researcher manipulates a variable
What variable did the researcher change during this experiment?
The researcher changed the independent variable.
Which variable does the researcher intentionally change in a scientific experiment?
The variable that the researcher intentionally changes in a scientific experiment is called the independent variable. This variable is manipulated by the researcher to observe its effect on the dependent variable.
What is the primary difference between an experiment and observational study?
In an experiment, the researcher manipulates a variable.
What introduces victor to the study of electricity and galvanism?
a violent thunderstorm, and subsequent conversation with a famous researcher.
What is the difference between factor and treatment in a experiment?
treatment is a factor in which a researcher will apply to an experimental unit and collect the data from the same. factor is a material used by researcher in an experiment in the field .
What should the classical experiment provide the researcher with?
A classical experiment should provide the researcher with reliable and valid data to test a hypothesis. It should allow the researcher to establish cause-and-effect relationships and draw meaningful conclusions based on the results.
