# Question: The following frequency histogram represents the IQ scores of a

The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The frequency of each class is labeled above each rectangle.

(a) How many students were sampled?

(b) Determine the class width.

(c) Identify the classes and their frequencies.

(d) Which class has the highest frequency?

(e) Which class has the lowest frequency?

(f) What percent of students had an IQ of at least 130?

(g) Did any students have an IQ of 165?

(a) How many students were sampled?

(b) Determine the class width.

(c) Identify the classes and their frequencies.

(d) Which class has the highest frequency?

(e) Which class has the lowest frequency?

(f) What percent of students had an IQ of at least 130?

(g) Did any students have an IQ of 165?

## Answer to relevant Questions

The frequency histogram in the next column represents the number of alcohol-related trafﬁc fatalities by state (including Washington, D.C.) in 2008 according to the National Highway Trafﬁc Safety Administration. (a) ...The following time-series plot shows the annual unemployment and inﬂation rates for the years 1988 through 2010. (a) Estimate the unemployment and inﬂation rates for 1992. (b) Estimate the unemployment and inﬂation ...Legend: 12|3 represents 12.3 Determine the original set of data. Using the data in Problem 28, what percentage of public community colleges in Illinois enrolled between 5000 and 9999 students? What percentage of public community colleges in Illinois enrolled 15,000 or more ...The following data represent the ages of the presidents of the United States (from George Washington through Barack Obama) on their ﬁrst days in ofﬁce. (a) Construct a stem-and-leaf plot and (b) Describe the shape of ...Post your question