Assignment -
Perform the following tasks to complete this assignment:
Part A - Learning Activity
The overall goal of this learning activity is to create standardized (Z-) scores for several variables. In this set of learning activities you will use the Drinks.sav data file.
The file Drinks.sav, a PASW Statistics data file that contains hypothetical data on 35 beverages. Included is information on their characteristics (e.g., % alcohol), price, origin, and a rating of quality.
1. Create standardized scores for all scale variables (price through alcohol). Which beverages have positive standardized scores on every variable? What does this mean?
2. What is the most extreme z-score on each variable? What is the most extreme z-score across all variables?
3. What beverage is most typical of all beverages, that is, has z-score values closest to 0 for these variables?
Part B - Learning Activity
The overall goal of this learning activity is to run Frequencies to explore the distributions of several variables. In the exercises you will use the data file Census.sav.
The file Census.sav, a PASW Statistics data file from a survey done on the general adult population. Questions were included about various attitudes and demographic characteristics.
1. Run the Frequencies procedure on the following variables: sex, wrkstat (Labor Force Status), paeduc (Father's highest degree), and satjob (Job or Housework). What is the scale of measurement for each? Request appropriate summary statistics and charts.
2. For which of these variables is it appropriate to use the median? What conclusions can you draw about the distributions of these variables?
3. What percent of respondents have a bachelor's degree, or higher? What percent of respondents are working?
4. How might you combine some of the categories of wrkstat to insure that there are a sufficient number of respondents in each category?
Part C - Learning Activity
In this set of learning activities you will use the Drinks.sav data file. The overall goal of this learning activity is to obtain summary statistics for scale variables.
The file Drinks.sav, a PASW Statistics data file that contains data on 35 beverages. Included is information on their characteristics (e.g., % alcohol), price, origin, and a rating of quality.
1. Run Frequencies on the variable alcohol, requesting the summary statistics median and mean, plus a histogram with a superimposed normal curve. Suppress the display of the frequency table.
2. What is the value of value of alcohol that splits the distribution in half? Is the median the same as the mean? Which value is lower? What does that tell you about the shape of the distribution of alcohol?
3. Does the histogram verify your description of the distribution of alcohol? How does it differ from a normal distribution?
4. Run Descriptives to obtain default statistics for price and calories. On which variable is there more dispersion? Is it even realistic to compare these two variables since they are on different scales?
5. Continuing your analysis of price and calories, run the Explore procedure for these two variables. Request a histogram in addition to the defaults.
6. Does the standard error of each variable help you better determine which variable has more dispersion?
Reference - Introduction to Statistical Analysis Using IBM SPSS Statistics Student Guide.
Attachment:- Assignment - DataSet Files.rar