Mean — Science definition
Defined in 2 courses:
- The sum of comparable values divided by their count. (Science 6: Matter, Energy & Earth Systems)
- The sum of the values divided by how many there are; it should always be reported with a measure of spread beside it. (Life Science & Scientific Inquiry)
Where it is taught
- Tables, Graphs & Patterns in Data — Inquiry, Measurement & Models, Science 6: Matter, Energy & Earth Systems, Grade 6
- Tables, Graphs & Patterns in Data — Scientific Inquiry & Diversity of Life, Life Science & Scientific Inquiry, Grade 7
In use
The mean is the familiar one: add the values and divide by how many there are.
Tables, Graphs & Patterns in Data
Questions using mean
Problem 1
Answer and explanation
No. It summarizes three values; the individual loads differ and should remain available.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 2
- One illustrative result establishes every real condition and needs no further evidence.
- A missing value is automatically a measured zero.
- A graph’s association automatically establishes a cause.
- mean: The sum of comparable values divided by their count.
Answer and explanation
mean: The sum of comparable values divided by their count.
The sum of comparable values divided by their count. The unwrapped cup decreases by 9 °C and the wrapped cup by 5 °C. The wrapped cup cools less over ten minutes under the stated comparison. This supports slower cooling if volumes, lids, location, and measurement are matched; it does not prove the wrapping prevents all energy transfer.
Problem 3
Answer and explanation
No. It summarizes three values; the individual loads differ and should remain available.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 4
Answer and explanation
No. Different combinations of measurements can average 5 cm. Inspect the original values and their spread.