CCSS.MATH.CONTENT.6.SP.A.1 Recognize a statistical question as one that anticipates variability in the data related to the question and accounts for it in the answers. For example, "How old am I?" is not a statistical question, but "How old are the students in my school?" is a statistical question because one anticipates variability in students' ages.

Buttons: Statistical Questions by Illustrative Mathematics
Grading Scales of Justice by Mathalicious (subscription required)

CCSS.MATH.CONTENT.6.SP.A.2 Understand that a set of data collected to answer a statistical question has a distribution which can be described by its center, spread, and overall shape.

Representing Variability with Mean, Median, Mode, and Range by MARS
My Two Left Feet by Mathalicious (subscription required)

CCSS.MATH.CONTENT.6.SP.A.3 Recognize that a measure of center for a numerical data set summarizes all of its values with a single number, while a measure of variation describes how its values vary with a single number.

Wealth of Nations by Mathalicious (subscription required)

CCSS.MATH.CONTENT.6.SP.B.4 Display numerical data in plots on a number line, including dot plots, histograms, and box plots.

Box-and-Whisker Plot Generator by Alcula
Dot Plot Tool by Geogebra
Bears in a Boat by Illuminations
Puppy Weights by Illustrative Mathematics
Human Box-and-Whisker Plots by Julie Reulbach
Paper Airplanes and Measures of Central Tendency by Julie Reulbach
Boxplots by Don Steward
Tuva Datasets by Tuva
Original and Sequel by Yummy Math
Fantastic Beasts and Where to Find Them by Yummy Math
Peak of Hurricane Season by Yummy Math

CCSS.MATH.CONTENT.6.SP.B.5 Summarize numerical data sets in relation to their context, such as by:

Overrated by Mathalicious (subscription required)

CCSS.MATH.CONTENT.6.SP.B.5.A Reporting the number of observations.

CCSS.MATH.CONTENT.6.SP.B.5.B Describing the nature of the attribute under investigation, including how it was measured and its units of measurement.

CCSS.MATH.CONTENT.6.SP.B.5.C Giving quantitative measures of center (median and/or mean) and variability (interquartile range and/or mean absolute deviation), as well as describing any overall pattern and any striking deviations from the overall pattern with reference to the context in which the data were gathered.

Suzi's Company by MARS
Candy Bars by MARS
What the hell is mean absolute deviation? by Nathan Kraft
Reaction Timer by Nrich
Mean Absolute Deviation by Open Middle
Mean, Median, and Range by Open Middle
Best Guesser by Don Steward
Mean Average = Equal Sharing by Don Steward
Wipeout by Don Steward

CCSS.MATH.CONTENT.6.SP.B.5.D Relating the choice of measures of center and variability to the shape of the data distribution and the context in which the data were gathered.

Electoral College by Illustrative Mathematics