1. Standard deviation is:
How spread out the data is from the mean.
2 .Choose all quantitative observations below:
The standard deviation of the data was 3.2
The average urban land decreased 2.33 km per year.
Standard deviation is a statistical measure that quantifies the amount of variation or dispersion in a set of values.
It provides a way to express how much individual data points differ from the mean (average) of the data set.
Therefore, it indicates the spread or dispersion of the data around the mean.
Quantitative observations involve measurable and numerical data. Let's analyze the provided statements:
"More farm land was seen over time."
This statement is qualitative, as it describes a trend but doesn't provide specific numerical values.
"The standard deviation of the data was 3.2."
This statement is quantitative as it gives a specific numerical value (3.2) for the standard deviation.
"The map was mostly green."
This statement is qualitative, describing the dominant color on the map but not providing measurable data.
"The average urban land decreased 2.33 km per year."
This statement is quantitative, as it provides a specific numerical value (2.33 km) for the average decrease in urban land per year.
The quantitative observations are: "The standard deviation of the data was 3.2" and "The average urban land decreased 2.33 km per year."