A representative sample of trees in a forest shows the trees to have a mean circumference of 19.7 inches and a standard deviation of 1.3 inches. Assuming the circumferences are normally distributed, what is the z-score for a tree with a circumference of 22 inches?

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Which statements are true about box plots? check all that apply. they describe sets of data. they include the mean. they show the data split into four parts. they show outliers through really short “whiskers.” each section of a box plot represents 25% of the data.

The graph shows how many words per minute two students read. drag to the table the unit rate that matches each graph.