Analyzing Problems in Comparing Data Sets

Which is a true statement based on the dot plots above?

• Set B has the greater range

• Set B has the greater median

• Set B has the greater mean

• Set A is less symmetric that Set B

Which is a true statement based on the box plots above

• The data for Team B have the greater range.

• The data for Team A are more symmetric.

• The data for Team B have the greater interquartile range.

• The data for Team A have the greater median.

Which is a random sample?

• 10 students in the Spanish Club are asked how many languages they speak.

• 20 customers at an Italian restaurant are surveyed on what their favorite food is.

• 15 students were asked what their favorite color is.

• 10 customers at a pet store were asked whether or not they had pets.

A survey asked 100 students in a school to name the temperature at which they feel most comfortable. The box plot above shows the results for the temperatures in degrees Fahrenheit. Which could you infer based on the box plot above?

• Most students prefer a temperature less than 65 degrees.

• Most students prefer a temperature of at least 73 degrees.

• Almost no students prefer a temperature of less than 77 degrees.

• Almost no students prefer a temperature of more than 65 degrees.

The box plots show data from a survey of students under 14 years old. They were asked on how many days in a month they read and draw. Based on the box plots, which is a true statement about the students?

• Most students draw at least 12 days a month.

• Most students read less than 12 days a month.

• Most students read more often than they draw.

• Most students draw more often than they read.

Katie is reading a 200 page book that is divided into five chapters. The bar graph shows the number of pages in each chapter. What percent of the pages are in Chapter 2?

• 3%

• 15%

• 30%

• 50%

Lee Middle School has 420 students. Irene surveys a random sample of 45 students and finds that 18 of them have pet cats. How many students are likely to have pet cats?

• 24 students

• 40 students

• 168 students

• 240 students

Above is data collected from a random sample of 80 students regarding their fitness habits. If the entire school has 600 students, then what is a reasonable estimate for the number of students who consider themselves to have an average fitness habit?

• 175

• 120

• 280

• 330

Mrs. Ramirez worked with her personal trainer to help develop a nutritional plan. The circle graph shows the recommended percentages for her daily intake. If she will start week 1 eating 1,800 calories, then how many should be from proteins?

• 450 calories

• 350 calories

• 630 calories

• 270 calories

What is the difference in medians of the two box plots?

• 3

• 4

• 5

• 2