Statistical Questions, Dot Plots, and Histograms

a type of bar graph used to display numerical data that have been organized into equal intervals.

• Dot Plot

• Line Plot

• Histogram

• Graph

involves collecting, organizing, and interpreting pieces of information, or data.

• Statistics

• statistical Question

• Measure of center

• Mean

a question that is answered by collecting data.

• Statistics

• statistical Question

• Measure of Center

• Mean

is the sum of the items in a data set divided by the number of items in the set. (a.k.a average)

• Mean

• Median

• Mode

• Range

the middle numbers in an ordered set of data.

• Mean

• Median

• Mode

• Range

a measure of variation in a set of numerical data, the interquartile range is the distance between the first and third quartiles of the data set

• Interquartile Range (IQR)

• Mean absolute deviation

• Outlier

• Distribution

a measure of variation in a set of numerical data, computed by adding the distance between each data value and the mean, then dividing by the number of data values

• Interquartile Range (IQR)

• Mean absolute deviation

• Outlier

• Distribution

a value that is much greater than or much less than the other values in a set of data

• Interquartile Range (IQR)

• Mean absolute deviation

• Outlier

• Distribution

Each dot represents 1 day. How many days were recorded?

• 9

• 21

• 20

• 105

How many trouts weighed MORE THAN 450 grams?

• 8

• 14

• 11

• 10