DQ1W10 Data Types

Data Types

Descriptive statistics involves arranging, summarizing, and presenting a set of data in such a way that useful information is produced. Its methods use graphical techniques and numerical descriptive measures (such as averages) to summarize and present the data, allowing managers to make decisions based on the information generated. The two most important factors that determine the appropriate method to use are the type of data and the information that is needed.

Consider the following example:

A sample of shoppers at a mall was asked the following questions. Identify the type of data each question would produce and explain the value to a researcher for gather that data type:

What is your age?

How much did you spend?

What is your marital status?

Rate the availability of parking: excellent, good, fair, or poor.

How many stores did you enter?

Directions to student: The final paragraph (three or four sentences) of your initial post should summarize the one or two key points that you are making in your initial response. You will be writing three or more discussion posts per week. Your main post must be two to three substantive paragraphs 150-200 total words and include at least two APA-formatted citations/references.

DQ2W10

Mean, Median, Mode

Mean, Median, Mode: Which is Best?

We use three different measures to describe the centre of a set of data. There are several factors to consider when making our choice of measure of central location.

Compare the three measures and contrast the advantages and disadvantages of each.

Using this information, solve the following:

The number of sick days due to colds and flu last year was recorded by a sample of 15 adults. The data are:

5 7 0 3 15 6 5 9 3 50 51 52 53 54 55

1. Determine the mean, median, and mode of these data.

2. What do these statistics tell you about the sick days due to colds and flu the previous year?

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