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Bell work:

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Write a statistical question you could ask your classmates about the movies they like.

You will have 10 minutes to ask your classmates the statistical question you wrote during bell work. Create a line plot or a tally chart to display the results.

Line plot

Tally chart

- Statistical questions can be divided into two groups:
categorical or numerical.

- Categorical data is measured qualitatively by placing the items into categories or groups.
Ex. Favorite color, male or female, hair color

- Categorical data is often displayed using a bar graph or a circle graph

- Often times, categorical data does not involve numbers, therefore will not have a mean, median, or range.
- The mode is the answer that occurs most often. The mode is the most useful calculation for categorical data.

- Numerical data is measured quantitatively and has a value or number for which operations such as addition or averaging make sense.
- Numerical data can be analyzed to find mean, median, range, and other forms of measurement
- Numerical data is often displayed using a line plot (dot plot), histogram, or box and whisker plot.
*We will study each of these in more detail throughout this unit

Get into groups of 3

Categorical

Numerical

http://grade6commoncoremath.wikispaces.hcpss.org/Unit+5+Statistics+Probability

6.SP.1 Categorical and Numerical Questions