Question

a professor had students keep track of their social interactions for a week. the number of social interactions over the week is shown in the following grouped frequency distribution. how many students had at least 80 social interactions for the week? the number of students was (type a whole number.) number of social interactions frequency 50-54 6 55-59 17 60-64 11 65-69 11 70-74 12 75-79 12 80-84 3 85-89 6 90-94 0 95-99 2

Explanation:

Step1: Identify relevant groups

Find groups ≥80 interactions: 80-84,85-89,90-94,95-99.

Step2: Sum their frequencies

Add frequencies: 3 + 6 + 0 + 2 = 11.

Answer:

11