Deviation

While there has been an increase in the use of virtual manipulatives. Their concrete counterpart’s haven been at the head of mathematics education for decades. The use of concrete manipulatives has long been applauded as a quality instructional tool. “Students’ mental images and abstract ideas are based on their experiences. Hence, students who see and manipulate a variety of objects have clearer mental images and can represent abstract ideas more completely than those whose experiences are…

assessment included a standard score mean of 100 with a standard deviation of 15 with an average range of 85-115. The confidence interval was the degree that the clinician could be certain that the statistical values collected were true. The larger the range around Amanda’s obtained standard score, the greater the confidence was that it would include her true score. Amanda scored a standard score of 76 placing her -1 standard deviations below the mean on the Core language area found in the…

Process Control at Polaroid Introduction Polaroid corporation has two major products in their instant film department: peel-apart and integral. In peel-apart technology, the user has to physically peel apart the two sides of the film envelope. The integral technology was much simpler with the camera automatically ejects the frame and development process starts instantaneously. R2 building is used to manufacture integral films. This particular building was showing signs of trouble, hence the…

3.12: Data Analysis process Overall, the objective of the research analysis is to try to answer the research questions formulated in Chapter 1. Accordingly, a conceptual framework and propositions have been developed from these questions, and justified in the literature review section. Therefore, the data analysis will be pursued to gather evidence pertaining to the several concepts identified. Quantitative data from the questiormaire survey will be analyzed by utilizing the Statistical…

Table one shows that mean for gender and shorter memory recall, with the standard deviations displayed within brackets. From analysing to Row mean, it is clear to see that males had a slightly higher level M=7.76 SD = 2.09; to females M=7.63 SD= (2.55). Examining the column means shows that as the day progressed so does the column mean…

us. More specifically, we looked at the mean and standard deviation of demand for the first 50 days of the simulation. We did this by exporting the data from Littlefield into an Excel document and utilizing the AVG and STDEV functions within it. These functions gave us an average demand of 14.52 jobs per day, and a standard deviation of 4.17 jobs per day for the first 50 days. By comparing these numbers we realized that the standard deviation was nearly 30% of the average daily demand. This told…

̅, weighted by n, seen in Figure 7. Note that our standard deviation was extremely high. To minimize the variance of our mean, we calculated a new weighted average (w), using the following formula: N denotes the total number of simulation runs; in this case, N = 10. A new histogram was generated, with the mean weighted by w, seen in Figure 8. All of summary statistics remained the same, with the exception of our standard deviation, which was reduced to equal the standard…

Another numerical question is µ1>µ2. µ1 is defined as the sample mean of Hispanic workers salaries and µ2 defined as the sample mean of Caucasian workers salaries. The Hispanic sample population is six workers from the “Wages and Wage Earners Data Set.” Learning Team B needs to consider whether or not the population is normal as the population size is less than 30. This also prohibits use of the Central Limit Theorem until the data set is proven normal. The wage of one worker being much…

09.07 Task 1—Normal Distribution Scores on a statewide standardized test are normally distributed with a mean of 12.89 and a standard deviation of 1.95. Certificates are given to students whose scores are in the top 2% of those who took the test. This means that they scored better than 98% of the other test takers. Marcus received his score of 13.7 on the exam and is wondering why he didn’t receive a certificate. Show all work to determine whether Marcus’ score was high enough to earn a…

Introduction The dynamics of hospital performance are often associated with effective patients’ care and length of stay (LOS). In this case study, the hospital governance is strategically seeking to reduce LOS in the inpatient setting at four of the system 's hospitals. Generally, we will conduct analyses of the data set that have been provided to identify the hospital that is achieving the lowest LOS using descriptive statistics. Statistical Analysis: Length of Stay Each hospital in the…