Question

Use the data Cerealsjmp to explore and summarize the data as follows: 1. Which variables are ordinal? Which are nominal? Calories and Protein Nominal variables: Ordinal Variables: (Select] (although it is coded as continuous) 2. Use Cols>Columns Viewer to obtain summary statistics. Which, if any, of the variables is missing values? The variables [Select) Select 1 and [Select] have missing values. The data set has Select missing values in total. 3. Use Analyze Distribution to plot a histogram for each of the continuous variables and create summary statistics. Based on the histograms and summary statistics, choose the correct answers: [Select ] and Select] have the largest standard deviations, and so are the most variable. The variables Select] [Select ISelect] Select l , and seem (right) skewed. 4. Use the Graph Builder to plot a side-by-side boxplot comparing the calories in hot vs. cold cereals. What does this plot show us? We see that in cold cereals. the different cereals vary in the amount of calories mainly between approximately Select] ,whereas all3 of the hot cereals have 100 calories. 5. Use the Graph Builder to plot a side-by-side boxplot of consumer rating as a function of the shelf height (the variable shelf). If we were to predict consumer rating from shelf height, does appear that we need to keep all three categories of shelf height? The following conclusion is [Select Since the distribution of ratings seems to differ at each of the three shelf helghts, it appears that we need to keep all three categories.

1. Which variables are ordinal? Which are nominal?
Nominal variables: and
Ordinal Variables: (although it is coded as continuous)

Answer Options:
1a. Nominal variables selections: Calories, Type, Protein or Potassium, MFG
1b. Ordinal Variables selections: Calories, Shelf, Protein

2. Use Cols>Columns Viewer to obtain summary statistics. Which, if any, of the variables is missing values?
The variables , , and have missing values. The data set has missing values in total.

Answer Options:
2a. Calories, Carbo, Protein & Fat
2b. Fiber, Fat, Sodium & sugar
2c. Potassium, Vitamins, weight Shelf
2d. 3,4,5

3. Use Analyze > Distribution to plot a histogram for each of the continuous variables and create summary statistics. Based on the histograms and summary statistics, choose the correct answers:

and have the largest standard deviations, and so are the most variable.

The variables , , , and seem (right) skewed.
Answer Options:
3a. fat, sodium, calories
3b. fibe, rating potassium
3c. shelf, fat, cups
3d. names, cups, fiber
3e. potassium, carbs, sugars
3f. protein, calories, rating

4. Use the Graph Builder to plot a side-by-side box-plot comparing the calories in hot vs. cold cereals. What does this plot show us?

We see that in cold cereals, the different cereals vary in the amount of calories mainly between approximately , whereas all 3 of the hot cereals have 100 calories.

Answer Options:
100-140
90-120
50-100

5. Use the Graph Builder to plot a side-by-side box-plot of consumer rating as a function of the shelf height (the variable shelf). If we were to predict consumer rating from shelf height, does it appear that we need to keep all three categories of shelf height?

The following conclusion is :

Since the distribution of ratings seems to differ at each of the three shelf heights, it appears that we need to keep all three categories.

Answer Options:
True
False

Answer 1

Nominal variables are those which do not have numerical value or cannot be ranked whereas ordinal values can be ranked.

1> Based on this, the type is nominal and calorie, shelf, potassium, protein amount can be measured and thus they are ordinal. In this way, we can classify variables.