The study of learning derives from essentially two sources. because learning involves the acquisition of knowledge, the first concerns the nature of knowledge and how we come to know the second source in which modern learning theory is rooted concerns the nature and representation of mental life.

references:
driscoll, m. p. (2000). psychology of learning for instruction (2nd needham heights, ma: allyn & bacon.

The box plots show the distributions of the numbers of words per line in an essay printed in two different fonts.which measure of center would be best to compare the data sets? the median is the best measure because both distributions are left-skewed.the mean is the best measure because both distributions are left-skewed.the median is the best measure because both distributions are symmetric.the mean is the best measure because both distributions are symmetric