Chapter 1. Tutorial: Scatterplots
1.1 Problem Statement
A dataset consists of the composition of 77 breakfast cereals - a portion of the dataset is shown below.
Calories – calories / serving; Protein, Fat, Fiber, Total Carbohyrates, Sugars – grams/serving
Here is plot of the relationship between the calories/serving and the number of grams of fat.
1.2 Step 1
questions
Question 1.1
The 3gx+5KW2+JygAfdh5Xyy2V49BtWWvGGPmspjeSGowxgwFNHTsm49QYxUG0k= is the explanatory variable and the A9IL/BVKGOb+Rh5yFUAh3hLCtuNlhdrLedoVCDY2ebo+5XDT is the response variable.
Question 1.2
A cereal with 9 grams of fat had HrmMLL3J8h239mBNw2if/PxYQIQEQ0EL calories/serving.
Question 1.3
A cereal with 250 calories/serving had OJfNBOK/25C7kG3x grams of fat.
1.3 Step 2
questions
Question 1.4
There appears to be ENLKW2E+JiCvH+xuXQPZjccntKZZR4RLKA/WN9zqXAC2+lihL+7QqAhwidE= between the calories/serving and the grams of fat/serving.
Question 1.5
The X axis contains the sRDzUprvtvVeeZ8J7Jx0Nci/IwV+8ojEl1o1Cg== variable which is the number of 3gx+5KW2+JygAfdh5Xyy2V49BtWWvGGPmspjeSGowxgwFNHTsm49QYxUG0k=. The Y axis contains the vXggM6MF0GUjiENfBXmazotWtzRzm9j3Qh0IwA== variable which is the number of r57BgFFqRQTbj79rbmW9xuNZ2TFRcUF9cMbIPtJBTAgwmhZiwO5jXWqCZ1A=.
1.4 Step 3
questions
A scatterplot of the number of calories/serving and the grams of fat/serving uses a different symbol for each manufacturer:
Question 1.6
Manufacturer A only had one cereal in the set. This cereal has rwg8iLgrLMuge31A51a7fg== grams of fat and 2T6CaId8ncPpWdCev2Ii2G0dTF+CfLzD calories/serving.
Question 1.7
VJrYXetQHNgh2gGEdRk7Bwb2u4HtkaG2MEeiFkhNJPBpNjTCvxzEVbAw3XsnDTY3jgsWuSdVJTIrEYSpybBBcsI5bZY5wx6kochGnMhg5Uf1hpXSjZzWgPbdFovsOPBkcSQ3Qg==Question 1.8
Manufacturer 0EktG6tmYczU4+x+3F2+X6QszJg= made the cereal with the highest number of calories/serving.
Question 1.9
Manufacturer y7C6eeCW8feDJbVImupXqHC9kSQ= made the cereal with the lowest number of calories/serving and the lowest grams of fat/serving.