Segmented regression

igure 13. Saudi Arabia vs. The Globe (Nelson Complexity Index) Saudi Arabian refineries stand at 6.0, i.e. below the global average of 7.9. The reason for low NCI is because historically Saudi Arabian focus was on upstream business and refineries have been an addition to meet local demand. In the past couple of decades, the demand has grown significantly requiring more complex refineries. Furthermore, Saudi Arabia’s strategic vision to be self-sufficient and net exporter of fuels in the future…

Some of the similarities that I saw in the data are: 1. An increase in temperatures began in January and ended in July. After July, the temperatures decreased. 2. With the data I worked with, I noticed that the median tends to be around 50 to 60 degrees. 3. Once the data hits a certain point, like a max, the data values decreased. I was able to find the first similarity and the third similarity when I looked at the line graphs. Looking at the line graphs, I was able to see where the data…

Rabia Iqbal Biol 395-1005 lab 01/31/2015 Broadford assay Absorbance Figure 1. The concentration and absorbance of Bradford assay. Four samples containing Bovine serum albumin, diluent, and Bradford. At 0.25 mg/ml concentration the absorbance was 0.109 nm and the relation between absorbance and the concentration held constant throughout except at the 0.50 mg/ml when the concentration absorbance was 0.186 nm. Figure showed that as the concentration is increased the absorbance elevates also. All…

independent variables in a regression model. It is important to know the amount of shared variance when interpreting both the significance and the meaningfulness of a correlation coefficient in order to determine whether the predictors are useful in the model. In order to predict how well a student might do in college, a researcher might examine various variables, including SAT scores, age, gender, race, and socioeconomic status. In this regard, she might use regression analysis. The p value…

Seatwork: A. Convert the following rotation to degrees and revolution. 1. 1/3 rotation : counterclockwise 2. 4/5 rotation : clockwise 3. 13/3 rotation clockwise B. Change each radian measure to degree measure and sketch the angles in standard position. 1. / 3 rad 2. -3 / 4 C. Determine which of the following angles are quadrantal angles. 1. 850 = __________________ 3. 5600 = ___________________ 2. 2700 =…

2.2 The method At the searcher will do the searching process as follows: I. Start at the origin and search the cell number 1 and then number 2, 3. Now, the first revolution is completed. If the target not found, then go to step II. II. Since, the target is not detected, then the searcher will do the second revolution which contain the cells number 4 to number 14 as in Fig.1(a). And so on until the hole will detect. Assuming that the target is randomly located in the space at the…

My average adjacent length was about 4.5% less than the correct length, so it concludes that the illusion had a small impact on my perception of line. 2A: How is this illusion related to depth perception? When we see the two lines to be at different distance, our brain try to figure out that which is near to our vision by showing the visible distance. So the line which form near edge of an exterior corner, we think that this line looks shorter…

Raw class data between scaling variables and maximum jumping performance were recorded in Table 1. These combined results were then studied using both the regression and correlation analysis methods to predict which morphological traits (body size, mass, muscle length and muscle circumference) determined the source of variation in toad locomotor performance; with the longest jump distance of the toads as the dependent variables and the various scaling variables as the independent variables. Then…

The first part of the experiment required one to trace the light rays going through a converging and diverging lenses. By setting up the light source towards the end of the paper and placing the lenses about 5 cm in front of the light the focal distances were found to be 14 cm for the converging lens and -5.5cm for the diverging lens. These focal distances theoretically make since because the converging lens causes the light rays to combine in front of the lens making it positive and the…

In conducting a national analysis of the hypothesis on the effectiveness of the strictness of drunk driving laws, a one-tailed correlation test will be conducted to determine if a negative correlation exists between the two variables. Before conducting the actual statistical analysis, a scatter chart was made in order to help visualize the relationship between the variable. As can be seen in the scatter plot, there is indeed a negative relationship between the variables. However, the…