Warm Up – to be done on a separate sheet of paper Find the length of a segment with endpoints (-5, 2) and (2, -1).

CORE Time Each person must work on their own worksheet At the end of Core time, all of your papers will be stapled together I will randomly choose one to grade for the group. Help each other & work together!

CCM1A Unit 2 Day 1 One-Variable Statistics

Definitions Data: A collection of information in context. Population: A set of individuals that we wish to describe and/or make predictions about. Individual: Member of a population. Variable: Characteristic recorded about each individual in a data set.

Types of Variables Categorical Variable: A variable that records qualities or characteristics of an individual, such as gender or eye color. Quantitative Variable: A variable that measures a characteristic of an individual, such as height, weight, or age. In this unit, we will focus on quantitative data.

Variables can be categorical or quantitative Go over the Collect student data worksheet and discuss which type of variable each one is. Deals with descriptions. Data can be observed but not measured. Colors, textures, smells, tastes, appearance, beauty, etc. Qualitative → Quality Deals with numbers. Quantitative → Quantity Data which can be measured. Length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.

Categorical or Quantitative Data? Birth month Number of siblings Average amount of time (in minutes) of your ride to school. Number of pets model of the car you drive (or dream car ;P) Age of your youngest parent Predicted letter grade of your first Math 1 test. C, Q, Q, Q, Q, C, Q, C

1. Brand of vehicle purchased by a customer 2. Price of a CD 3 1. Brand of vehicle purchased by a customer 2. Price of a CD 3. Type of M&Ms preferred by students 4. Phone number of all the students enrolled in school. 5. The height of a 1 year old child. 6. Term paper status 7. Gender of the next baby born at a particular hospital. 8. Amount of fluid (oz) dispensed by a machine used to fill bottles with soda. 9. Thickness of the gelatin coating of a Vitamin C capsule 10. Brand of computer purchased by a customer 11. State that a person is born in 12. Price of a textbook 13. Zip code of each student in this class 14. Actual weight of coffee in a one pound can. 15. The length of a rattlesnake. 1. C 2. Q 3. Q 4. C 5. Q 6. Q 7. C 8. Q 9. Q 10. C 11. C 12. Q 13. C 14. Q 15. Q

Create a frequency table & histogram. The number of calls from motorists per day for roadside service was recorded for the month of December 2012.  The results were as follows: Create a frequency table & histogram.

Describing Distributions SOCS Shape Center Spread Outliers In order to describe a distribution, we address the following things: the shape of the distribution, the center or most typical value, how spread out the data is, and if there are outliers, we note them.

Shape Mound shaped & symmetrical Skewed left (extreme low values) Skewed right (extreme high values) Uniform Go over 4 types of shapes. What shape does our links distribution have?

HW 2.1