**Unit 7: Data Collection and Analysis**

**This unit should take approximately 11 instructional days**

**This unit should take approximately 11 instructional days**

7.SP.1Understand that statistics can be used to gain information about a population by examining a sample of the population; generalizations about a population from a sample are valid only if the sample is representative of that population. Understand that random sampling tends to produce representative samples and support valid inferences.

7.SP.2Use data from random sample to draw inferences about a population with an unknown characteristic of interest. Generate multiple samples (or simulated samples) of the same size to gauge the variation in estimates or predictions.

7.SP.3Informally assess the degree of visual overlap of two numerical data distributions with similar variabilities, measuring the difference between the centers by expressing it as a multiple of a measure of variability.

7.SP.4 Use measures of center and measures of variability for numerical data from random samples to draw informal comparative inferences about two populations.

Essential unit :

bar graph

box plot

categorical data

cluster

data

distribution

dot plot/line plot

five number summary

frequency table

gap

histogram

interquartile range

mean

mean absolute deviation

measures of center

measures of spread

median

mode

numerical (quantitative) data

outliers

peak

random sample

range

representative sample

statistics

variability