Combining Data Practice

Combining Data Practice

Read each question carefully and use the provided data to answer. Show your work where necessary.

The following data shows the number of books read by two different classes in a month:

Class A: 12, 15, 10, 18, 13, 11, 14, 16

Class B: 10, 14, 12, 16, 11, 15, 13, 17

1. Calculate the mean number of books read for each class. Which class read more books on average?

2. Calculate the median number of books read for each class. Are the medians similar?

Use the bar graph below to answer the questions. The graph shows the favorite subjects of students in two different grades.

3. The total number of Grade 7 students who prefer Math or Science is  .

4. The difference in the number of students who prefer English between Grade 7 and Grade 8 is  .

5. What is the total number of students surveyed for both grades in all subjects?  .

6. A school tested two groups of students on their math skills. Group A had an average score of 85, and Group B had an average score of 70. If there were 20 students in Group A and 30 students in Group B, what is the combined average score for all students?

A box plot shows the distribution of data, including the median and quartiles, making it easy to compare the spread of two different datasets.

7. A researcher is comparing the growth of two different types of plants over a month. Plant Type A grew an average of 15 cm, with a range of 5 cm. Plant Type B grew an average of 12 cm, with a range of 10 cm. Which plant type shows more consistent growth? Explain your reasoning.