Teaching the concept of necessity

• The curve has 5 peaks, the highest peak corresponds to grade 4;


• The mean (average) does not lie at the center of the distribution, and the
  distribution is not symmetrical around the mean;


• The tail of the distribution touches the horizontal axis;


• The mass of the distribution is concentrated on the left of the figure. The
  distribution is said to be right-skewed.

Performance and errors analysis according to the objectives of assessment

GRAPH 3

Comparing the results of the diagnosis tests, one can notice that the students in class 7th
A are better than the students in class 7th B. Most of them obtained better grades than the