Essays on Statistics

The negative value denotes that the labor cost of $75 was 0.681818 standard deviations lower than the average television repair cost of $90. The z-score for the  $100 labor cost From the z-value, positive  implies that the repair cost was above the mean cost by 0.454545 standard deviations. Question 2 Part a The shaded region...

Primary data simply means the data from the original source with the purpose in mind. It is the kind of data that has not been distorted by a third party unlike the secondary data that can be described as the kind of data that has been collected by any other...

One area of mathematics called statistics is concerned with gathering, analyzing, and managing data, frequently to make it more understandable and useful. (Brown & Kass, 2009). Falsehoods and representational distortions, however, may have an impact on how customers and casual observers interpret data. When presenting data, some sleights of hand...

Score(Award 0 if the incorrect response is provided) Exceeds Normal Expectation 3 (The right response is provided along with strong sources and supporting data. The solution is based on statistical data analysis, reports, previous scientists' research, and other academic papers. highlights the data and statistics that support their response. The...

According to Sammer (2011), adults aged 45 and older made up around 40% of the workforce in the United States. He confirms that the present recession, rising insurance costs, and advancing social security age all contribute to the majority of older Americans working longer than expected (Sammer, 2011). Clearly, the...

Every month, the US Bureau of Labor Statistics calculates the unemployment rate in the United States. The Bureau of Labor Statistics used data from the U.S. Bureau of the Census's Current Population Survey (CPS), which covers 60,000 members of the civilian population over the age of 16. (Marthinsen 73). The unemployment...

Considering the regression equation below; R2=0.55 n=26 F=4.88 Solutions QD=-5200-42P+20PX+5.2I+0.20A+0.25M (2.002)(17.5)(6.2)(2.5)(0.09)(0.21) QD=-5200-42P+20PX+5.2I+0.20A+0.25M Moreover, Q=3, P=500cts, PX=600cts, I=$5500, A=$10000, M=5000. QD = -5200-42 (500cts) +20 (600cts) +5.2 ($5500) +0.20 ($10000) =17650 Each independent variable's elasticity is computed as follows: Elasticity = (change in quantity per unit change in independent variable price) (price/quantity) As a result, the elasticity for...

Changing the code to average 20 Input Test Case Expected Output 1\svalue=10\svalue=3\svalue=1\svalue=5\svalue=1\svalue=2\svalue=7\svalue=12\svalue=3\svalue=21\svalue=16\svalue=11\svalue=9\svalue=8\svalue=19\svalue=20\svalue=13\svalue=17\svalue=27\svalue=40 The average is 12.25. 2 value=120 value=18 value=100 value=95 value=101 value=203 value=200 value=310 value=70 value=200 value=100 value=74 value=100 value=0 value=200 value=2 value=200 value=10 value=75 3 value=80\svalue=100\svalue=12\svalue=100\svalue=-90\svalue=90\svalue = 100\svalue=200\svalue=30\svalue=202\svalue=94\svalue=230\svalue=100\svalue=76\svalue=78\svalue=100\svalue=-80\svalue=80\svalue=20\svalue=92\svalue=200\svalue=234\svalue=202\svalue=243 When a positive value is entered, the average is 133.15. What if you enter a value...

In statistics, the word random sample refers to the method used to pick a sample. A simple random sample is the most common sort of random sample. A random sample indicates that members of the population have equal chances of being chosen. We can use any method to create random...

A dataset contains information on 4000 full-time workers from the 1998 Current Population Survey in the United States. The relevant variables are as follows: • AHE stands for average hourly earnings (in 1998 dollars) • College=1 if has a college education, 0 if just has a high school education • Female = 1 if...

Current literature leaves key questions unexplained about the impact of teacher qualification on student learning outcomes (measured by GPA scores). According to the 2014 Family Survey, this study answered this question with 251 schools in Indonesia. This study included regression analysis, as well as many descriptive statistics and an analysis...

H0: β2, β2, β2 =0 H1= β2, β2, β2 ≠ 0 F= 2.45 in Excel, significance threshold = 0.05 We reject the alternative hypothesis since F (2.45)>significant level (0.05) and conclude that there is a relationship between auto rate and age, male percentage, and female %. R2 The excel table results show that R2 =...