Instructions: Complete the work below, making any necessary computations on separate sheets of paper, and then use the Chapter 4 Exercise Form to record your answers.

Refer to the below data sets of scores, X, Y and Z, from two 5-point quizzes to answer the questions.

X f Y f Z f
5 4 5 1 5 0
4 3 4 2 4 0
3 0 3 4 3 1
2 1 2 1 2 4
1 1 1 1 1 1
0 1 0 1 0 4

#1. (a-c) Compute the mean for each set of scores.

The mean is the average of all the numbers. You calculate it by adding all the numbers together and dividing by the number of observations. When you have a table like this, showing the frequencies (f) for each value (x, y, or z), you can calculate the mean by writing out all the numbers and calculating the mean as above, or by multiplying each value by its respective frequency, adding them together, then dividing by the total. Both methods are shown below; the means are in ...

You have administered a standardized test of manual dexterity to two groups of 10 semi skilled workers. One of these two groups of workers will be employed by you to work in a warehouse with many fragile items. The higher the manual dexterity of a worker the less likelihood that worker will break significant inventory. Becaus

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a. Data analysis using descriptive statistics
1) Calculate the measures of centra

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1. How many intervals should there be in a frequency table?
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1) Over the past several months, customers at Stymie's department store have been asked to fill out customer satisfaction surveys. In the surveys, the customers rate their shopping experience on a scale of 0 to 100. Here are 25 recent ratings:
13, 16, 16, 21, 24, 33, 34, 37, 41, 45, 45, 49, 51, 56, 56, 56, 58, 61, 66, 70, 76,