Step-by-step explanation:
We are given the measure of central tendency of two different sets of data.
For the first data set, the mean is 13.4g, while for the second the mean is 19.7g.
The Mean Absolute Deviation for both data sets is 3g.
We need to understand the MAD (mean absolute deviation). This measures how far off each data point is from the mean, either to the left, or to the right.
For set 1, the each data is 3 units away from the mean. Also for set 2, each data is 3 units away from the mean.
We can conclude then that;
ANSWER:
(1) There is no significant difference between the distributions
(2) The difference in mean mass between data set 1 and data set 2 is very small.
(3) The MAD means that both sets of marbles have similar distribution.