0/1
Intros
0/9
Examples
Lessons
- Calculate the mean of each set of data. Round your answer to the nearest tenth.
- A survey collected information about the total amount of time teens spent on computers each week. Only data from four cities is listed below.
Cities
Computer time (hours per week)
A
15.3
B
17.5
C
12.4
D
13.9
- Harry was given the following marks on his English essays:
69%, 71%, 85%, 80%, 93%, 99%- Calculate his mean mark? Round your answer to the nearest whole percent.
- What mark would he need to receive on the next essay to increase his mean by 2 percent for the seven essays?
- Harry's friend, Thomas, received the following marks on his English essays:
96%, 74%, 75%, 66%, 96%, 90%
What is Thomas's mean mark? Round your answer to the nearest whole percent. - Who has a smaller mean absolute deviation? Harry or Thomas? What does this tell you?
0%
Practice
Free to Join!
StudyPug is a learning help platform covering maths and science from primary all the way to second year university. Our video tutorials, unlimited practice problems, and step-by-step explanations provide you or your child with all the help you need to master concepts. On top of that, it's fun — with achievements, customizable avatars, and awards to keep you motivated.
Easily See Your Progress
We track the progress you've made on a topic so you know what you've done. From the course view you can easily see what topics have what and the progress you've made on them. Fill the rings to completely master that section or mouse over the icon to see more details.Make Use of Our Learning Aids
Earn Achievements as You Learn
Make the most of your time as you use StudyPug to help you achieve your goals. Earn fun little badges the more you watch, practice, and use our service.Create and Customize Your Avatar
Play with our fun little avatar builder to create and customize your own avatar on StudyPug. Choose your face, eye colour, hair colour and style, and background. Unlock more options the more you use StudyPug.
Topic Notes
In this section, we practice calculating the mean of a data set. You may think your math teacher is mean if she says you are average! The word mean is often used simultaneously with the word average. The mean is calculated by dividing the sum of a set of values by the number of values in the set. In this
section, we use the mean of a data set to make predictions about the data. In this section, we are first given sets of data and asked to calculate the mean of each set. Then, we are given word problems and asked to make predictions about given sets of data, using what we know about the mean. For example, we are asked to determine how a given set of data would need to change in order to alter the mean by a specified amount.
Basic Concepts
Related Concepts
2
videos
remaining today
remaining today
5
practice questions
remaining today
remaining today