Chapter 2 - Methods for Describing Sets of Data - Exercises 2.48 - 2.70 - Applying the Concepts - Intermediate - Page 59: 2.64b

- The mean, obtained by adding all observations and dividing by the number of observations, is $1.927$ - The median, representing the score under which we find $ 50\%$ of the observations, is $1.755$ - The mode, that is, the score appearing the most number of times in the dataset, is $1.4$

See above.