Question

science grades
number of students
grades
50 - 59
60 - 69
70 - 79
80 - 89
90 - 99
it is symmetrical.
it has 2 clusters.
it is not evenly distributed
it has intervals of 5.

Explanation:

Step1: Analyze symmetry

Check if the histogram can be divided into two mirror - image halves. The left side (50 - 59: 2, 60 - 69: 5) and the right side (80 - 89: 5, 90 - 99: 2) around the 70 - 79 (8) bar. But the 70 - 79 bar breaks symmetry.

Step2: Check for clusters

A cluster is a group of adjacent bars with relatively high frequencies. Here, there is one main cluster around 70 - 79.

Step3: Examine even distribution

Even distribution would mean similar frequencies across intervals. Frequencies are 2, 5, 8, 5, 2 which are not similar.

Step4: Check interval size

The intervals are 50 - 59 (size 10), 60 - 69 (size 10), etc., not 5.

Answer:

It is not evenly distributed.