Introductory Statistics Lesson 3.1 C Objective: SSBAT find experimental probability. Standards: M11.E.3.1.1

3.You survey 1000 employees at a company and record the age of each. The results are shown in the Frequency Distribution.  If you randomly select another employee, what is the probability that the employee will be between 25 and 34? AgeFrequency 15 to to to to to to 7442 Σf = 1000

4.You survey 1000 employees at a company and record the age of each. The results are shown in the Frequency Distribution.  If you randomly select another employee, what is the probability that the employee will be 44 or younger? AgeFrequency 15 to to to to to to 7442 Σf = 1000 = 0.653

Experimental Probability Activity Insect Activity Students will choose an insect out of a bag 20 times and record their result each time on Worksheet -Go over the results as a class

ColorTallyTotals Red Blue Yellow Orange Green Purple

Law of Large Numbers As an experiment is repeated over and over, the Experimental Probability of an event will get closer to the Theoretical Probability of the event.

Homework Worksheet 3.1 C They will have to a roll a die 20 times for the front side of worksheet – leave time to do this in class

Alternative to Insect Activity  Have everyone flip a coin 10 times and record the results  Find Exp. Probability for tossing a Head  Look at the individual results – see how they compare to the Theoretical Probability of Heads  Look at the results of the class combined  See how they compare to the Th. Prob. of Heads

Group Results: Compare results to theoretical probability of Heads = ½