The data from a replicated experiment are very different from the data obtained during the initial experiment. Which statements identify possible reasons for the difference in the data? Check all that apply

The initial experiment was not a valid experiment.

The replicated experiment was performed incorrectly.

The replicated experiment used a different laboratory.

The initial experiment involved more trials and data.

The replicated experiment changed the variables being tested.

The initial experiment was not a valid experiment.

The replicated experiment was performed incorrectly.

The initial experiment involved more trials and data.

The replicated experiment changed the variables being tested.

Explanation:

A scientific experiment is performed to test if the predicated hypothesis can be proved or not.

The scientific experiment involves the repetition of the experiment by the same experimenter and the replication of the experiment which could be performed by the same experimenter or another experimenter to test if the results of the initial experiment are valid or not.

In the given question, the results of the initial experiment and the replicated experiment are different which could be due to various reasons:

The initial experiment was not valid - if the initial experiment performed is not valid. The replicated experiment was performed incorrectly - the replication procedure differs from the initial experiment or there could be some error while experimenting. The initial experiment involved more trials and data - the initial experiments could have involved more replicas, trials, and data. The replicated experiment changed the variables being tested - the variables of this two experiment could differ.

The initial experiment was not a valid experiment is the statement which identifies possible reasons for the difference in the data.

Explanation:

The replicated experiment however is crucial but doesn't satisfy the condition of justifying the validity of a scientific theory or hypothesis. However, the initial or repeated experiment are more satisfying in producing logical result from the experiment. It involves repeated methods of a particular experiment with more and more trials and observations of more data.

However, the replicate experiments are individual experiments of a specific hypothesis which fails to experiment are individual experiments of a specific hypothesis which fails to produce a logical result.