# Probability & Measures of Central Tendency

Your specific assignment for this week is to select a type of quantitative data to collect from your own life.

How many minutes does it take yo to get to work everyday.

In a brief paper, describe the data you are going to collect. Start collecting data today so you have can have at least 10 observations, preferably more.

Note: you only have to choose one variable, and then collect 10 days worth of data on that one variable. For example, if your variable is how long it takes you to drive to work each day, simply record how long it takes you to get to work for 10 days. Save this date for use in remaining SLP assignments.

Submit your paper to CourseNet for grading containing the above information by the end of this module.

Session Long Project assignment expectations:

Use information from the modular background readings as well as any good quality resource you can find. Please cite all sources and provide a reference list at the end of your paper.

The following items will be assessed in particular:

Your ability to explain the basic logic of probability theory

Your ability to identify the meaning of independent and dependent events

Part II

Using the data you have collected in above, please do the following:

Calculate the mean, median, and mode.

Are these numbers higher or lower than you would have expected?

Which of these measures of central tendency do you think most accurately describes the lifestyle variable you are looking at?

Write a brief paper pages with your calculations and the answers to these questions.

July 2nd 21 Minutes

July 3rd 17 Minutes

July 5th 19 Minutes

July 6th 15 Minutes

July 7th 23 Minutes

July 8th 16 Minutes

July 9th 15 Minutes

July 10th 17 Minutes

July 11th 22 Minutes

July 12th 15 Minutes

Here is the information that you requested, I used the last 10 days that I travelled back and forth to work.

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Hi,

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#### Solution Summary

This solution consists of details how to measure the central tendency of a given data.

Probability and Measure of Central Tendency problems

1. In a poll, respondents were asked whether they had ever been in a car accident. 157 respondents indicated that they had been in a car accident and 117 respondents said that they had not been in a car accident. If one of these respondents is randomly selected, what is the probability of getting someone who has been in a car accident?

2. The data set represents the income levels of the members of a country club. Find the probability that a randomly selected member earns at least $88,000

3. In a certain class of students, there are 12 boys from Wilmette, 3 girls from Kenilworth, 9 girls from Wilmette, 6 boys from Glencoe, 2 boys from Kenilworth and 6 girls from Glencoe. If the teacher calls upon a student to answer a question, what is the probability that the student will be from Kenilworth?

4. Find the probability of correctly answering the first 2 questions on a multiple choice test if random guesses are made and each question has 5 possible answers.

5. Of 1936 people who came into a blood bank to give blood, 200 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure.

Case assignment expectations:

Use information from the modular background readings as well as any good quality resource you can find. Please cite all sources and provide a reference list at the end of your paper.

The following items will be assessed in particular:

Identify the meaning of independent and dependent events.

Calculate probabilities and joint probabilities of simple events.

Explain the basic logic of probability theory

Solve the following problems showing your work (Measures of Central Tendency)

1. Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age.

2. A store manager kept track of the number of newspapers sold each week over a seven-week period. The results are shown below.

36 30 201 152 278 242 230

Find the median number of newspapers sold.

3. Last year, nine employees of an electronics company retired. Their ages at retirement are listed below.

52 65 67 51 50 64 68 58 56 Find the Mode

4. The amount of time (in hours) that Sam studied for an exam on each of the last five days is given below. Find the mean study time.

2.7 8.2 8.7 2.4 4.6

5. The distances (in miles) driven in the past week by each of a company's sales representatives are listed below.

45 70 242 268 452 490

Find the median distance driven.

Submit your work to CourseNet by the module due date, if you are having difficulty please contact your professor.

Case assignment expectations:

Use information from the modular background readings as well as any good quality resource you can find. Please cite all sources and provide a reference list at the end of your paper.

The following items will be assessed in particular:

Your ability to calculate the mean, median, and mode from a set of data.

Your ability to choose the most appropriate measure of central tendency for a particular set of data.

Your ability to explain the difference between the mean, median, and mode.