The article Objective Measurement of the Stretchabilityof Mozzarella Cheese (J. of Texture Studies, 1992:185194) reported on an experiment to investigate how thebehavior of mozzarella cheese varied with temperature.Consider the accompanying data on x 5 temperature andy 5 elongation(%) at failure of the cheese. [Note: The researchers were Italian and used real mozzarella cheese,not the poor cousin widely available in the United States.]x 59 63 68 72 74 78 83y 118 182 247 208 197 135 132a. Construct a scatterplot in which the axes intersectat (0, 0). Mark 0, 20, 40, 60, 80, and 100 on thehorizontal axis and 0, 50, 100, 150, 200, and 250on the vertical axis.b. Construct a scatterplot in which the axes intersectat (55, 100), as was done in the cited article. Doesthis plot seem preferable to the one in part (a)?Explain your reasoning.c. What do the plots of parts (a) and (b) suggest aboutthe nature of the relationship between the twovariables?
Statistics 130M Notes January 19, 2017 notes= January 26, 2017 class Tuesday January 24, 2017 Sick- Skipped Class. Sorry All Thursday January 26, 2017 Chapter 3 Numerical descriptive techniques - Allows us to be precise - Most mathematical calculations Information - When interrupting a histogram we focus on shape Population - Described by parameters - Parameters are often written using greek letters Summaries for symmetric distribution - Central tendency o Balancing point/ halfway point o ***should be same**** o Average of mean o Center of symmetric distribution Skewed distribution - Extreme values/ outliers effected the average - Curve killer - Don’t use balancing point Arithmetic mean
