Answer:
C. Salt was able to preserve meat before the invention of
Answer:
A
Explanation:
When there is an effect at one level of a second independent variable but is weakter or nonexistent at a different level of the second independent variable, soma condition with zero difference and another with a large difference is known as a spreading interaction.
This is known as external validity.
External validity refers to the extent to which findings from a research study can be extrapolated or generalized to people who were not part of the study, or to the population in general. In quantitative research, generalizability or external validity of a study serves as a quality check when assessing the value of a study.
Answer:
internal validity
Explanation:
There are two different types of validity i.e, internal and external validity and is described as the phenomenon that generally represents the meaningfulness and trustworthiness of the result of a particular study or research.
Internal validity: In statistics and research methods, the term internal validity is determined as the process that involves the degree of wellness to which a particular study is being done significantly if it avoids or ignores the confounding or not. Hence, if in a particular study the chance of confounding is less then the internal validity will be high i.e, they are inversely proportional to each other.
In the question above, the given statement signifies that internal validity is being threatened.
