Answer :
The sample means are distributed along the x-axis for a sampling distribution of a sample mean.
What is a sample mean?
A sample mean is an average of a set of data, that can be used to calculate the central tendency, standard deviation and the variance of a data set.
Now,
- In a two-dimensional graph, (with two axes), generally the independent variable is plotted on the x-axis and the dependent variable is plotted on the y-axis.
- Here, in sample mean, the average set of data is distributed on the x-axis as it is the independent value for a sampling distribution.
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