Age distribution: The ages of residents of a small town are given in the following frequency distribution. Approximate the mean age. Round your answer to one decimal place.
Class
0-9
10-19
Frequency
282
205
218
20-29
30-39
254
40-49
174
50-59
92
60-69
20
70-79
21
80-89
11
90-99
5

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?

Identify the statement below as either descriptive or inferential statistics. upper a certain website sold an average of 117 books per day last week. is the statement an example of descriptive or inferential statistics? a. it is an example of descriptive statistics because it uses a sample to make a claim about a population. b. it is an example of inferential statistics because it uses a sample to make a claim about a population. c. it is an example of inferential statistics because it summarizes the information in a sample. d. it is an example of descriptive statistics because it summarizes the information in a sample.

How do you find the rate of change using a graph?