Chapter 12 Simple Linear Regression Case Problem 1: Measuring Stock Market Risk a. Selected descriptive statistics follow: Variable N Mean StDev Minimum Median Maximum Microsoft 36 0.00503 0.04537 -0.08201 0.00400 0.08883 Exxon Mobil 36 0.01664 0.05534 -0.11646 0.01279 0.23217 Caterpillar 36 0.03010 0.06860 -0.10060 0.04080 0.21850 Johnson & Johnson 36 0.00530 0.03487 -0.05917 -0.00148 0.10334 McDonald’s 36 0.02450 0.06810 -0.11440 0.03700 0.18260 Sandisk 36 0.06930 0.19540 -0.28330 0.07410 0.50170 Qualcomm 36 0.02840 0.08620 -0.12170 0.03870 0.21060 Procter & Gamble 36 0.01059 …show more content…
PERCENT FATAL Fit Stdev.Fit Residual St.Resid 15 10.0 0.0390 1.2731 0.1126 -1.2341 -2.13R 23 8.0 2.1900 0.6990 0.1548 1.4910 2.62R R denotes an obs. with a large st. resid. There is a significant relationship between the two variables. Two observations are identified as having a large standardized residual and should be treated as possible outliers; the following standardized residual plot does not indicate any other problems with the residuals. [pic] Conclusion: It appears that the number of fatal accidents per 1000 licenses is linearly related to the percentage of licensed drivers under the age of 21; that is, the higher the percentage of drivers under 21, the larger the number of total accidents. Case Problem 3: Alumni Giving 1. Numerical and graphical summaries of the data follow. Variable N Mean Median TrMean StDev SE Mean Under 20 48 55.73 59.50 56.02 13.19 1.90 S/FRatio 48 11.542 10.500
Vehicle crashes are the leading cause of teen deaths. According to the National Highway Traffic Safety Administration 2011 statistical analysis, there was 1,237 fatalities involving young drivers between the ages of 17-19. On average, 30% of those vehicle fatalities were
According to the website http://womenissues.about.com/cs/abortionstats/a/aaabortionstats.htm there are approximately 126,000 abortions conducted each day throughout the world. This website includes the abortion statistics of the world and breaks the data down to the demographics of the United States. It also discusses the decisions to have an abortion and the use of contraceptives in the United States. This was an informative website and included detailed statistics conducted by the Alan Guttmacher Institute. According to the website http://www.bls.gov/cps in 2000, gon average there were roughly 135 million employed and 6 million unemployed people in the labor force in the United States.h (p. 3) The websites definition of
(Greg Monforton, Statistics). People between the ages of 19-24 account for the majority of impaired driving accidents. In fact, more 19 year olds are killed or suffer from impaired driving accidents than any other age group. It is clear that skill and their level of maturity. Now you have to wonder, who exactly is causing these accidents? Being a male is already a major problem, in fact 87% of fatally injured impaired drivers are male. Also, summer time is considered the “peak” season for impaired driving, summertime accounts for 40%. Another factor is the time of week, as one can assume, the weekend hold the majority of impaired driving cases. Similarly, the majority of these accidents happen at night. The statistics say enough, one who is over .10% BAC is 51% likely to get into a collision. (Greg Monforton, Statistics). Motor vehicle collisions are the major cause of death for 15-25 year olds. Many of these statics are based on the use of alcohol, but there is also marijuana and distracted driving that plays a major role in car collisions. Canadians that are between the ages of 15-25 have the largest cannabis use in the
Furthermore, 21 year olds create less traffic accidents and fatalities than 18 year olds. For example, 21 years olds are more mature and responsible for their own actions than 18 years olds. As a fact, “Excessive alcohol consumption contributes to more than 4,700 deaths among underage youth, that is, persons less than 21 years of age, in the United States each year.” (CDC). Throughout each year, 21 year old drivers tend to be safer on the road than 18 year olds. To prove this, 18 year olds get carried away with drinking while driving and force them to cause trouble with others.
Many studies carried out on the effect of a higher drinking age on the rates of traffic accidents have found out that there has been a significant drop in numbers. A study conducted by the National Highway Traffic Safety Administration (NHTSA) found out that the increased of MLDA age significantly reduced the number of fatal traffic accidents among the age of 18 and 20 years olds by approximately thirteen percent (NHTSA, 6). Similarly, a total of close to 27,502 lives were saved between the years of 1975 and 2008. Hence, lowering the MLDA to 18 would only mean more traffic accidents and fatalities among the
Decades ago, there was no law such as the MLDA 21 that regulated alcohol consumption. However, in 1984, a law was implemented that increased the drinking age from 18 to 21. Since this law has been in effect, there has been a decreased number of car accidents and fatalities. For example, “100 out of 102 traffic analyses in a meta-study regarding traffic accidents found that an increase in the legal age to drink led to a decreased number of accidents and fatalities”(National Highway Traffic Safety Administration). Also, studies showed that 18-20 year olds under the influence of alcohol had a high chance of getting into a car accident or a traffic accident.
Dee show the traffic fatalities over the years. This source states that drinking isn’t the most common cause of accidents. The teen traffic fatality rate of sixteen to nineteen year olds is doubled the rate for adults aged twenty-five and older. Teen traffic safety has improved the past twenty years. Since 1979 the teen traffic fatality rate has fallen thirty-seven percent. Statistics show that along with the thirty-seven percent, only twenty-two percent has dropped for adults over the age of twenty-five. The age of traffic fatalities after drinking have been affecting more older people than younger. To add to these numbers more teens have traveled more because they are becoming dependent on automobiles, which means they are becoming more responsible with them. Between 1983 and 1995 the miles traveled by teens just about doubled. By vehicle miles of traveling, teen fatality rates have
The sobering fact is drivers under the age of 21 are responsible for 17% of fatal alcohol related accidents, even though they represent only 10% of licensed drivers (Stim, R. Teen Drunk Driving: The Sobering Facts of Underage DUIs (n.d.). There are approximately 2000 deaths associated with under aged drinking and according to the blood alcohol content of the victims, the main contributing factor is binge drinking, averaging 5 times the legal limit. Research has also shown that more times than not, the underage drunk driving is not wearing seat belts, increasing the chances of a fatal accident. They have found that this # is 74% of the population of drunk drivers involved in fatal
drivers 16-20 years who were involved in fatal crashes, and were intoxicated, dropped 47 percent from 23 percent in 1985 to 12.7 percent in 1995.” (Teens and Drunk Driving) Each day
A trend apparent in all these statistics is the age group in which starts when a teenager is first receiving their licence(17yrs) and is still inexperienced and immature. Road Fatality by Gender Comparison From this statistic, individuals are shown and its proven that male accidents occur more frequently over each of the years in NSW. The Male statistics are practicaly double the female amount of incidents. Factors that influence risk taking behaviour of young drivers (speeding)
Today, the legal driving age in most states ia 16. The author points out “ following a horrific in a district in Illinois state representative John D’Amico introduced legislation to raise the driving age in his state from 16 to 18”. Before “ 155 teens between the ages of 16 and 19 died in automobile crashes”. After the enforced law “it dropped to 92”.
Traffic crashes are the leading cause of death for teens and young adults. More than 5,000 young people die every year in car crashes and thousands more are injured. Drivers who are 16 years old are more than 20 times as likely to have a crash, as are other drivers. There are two main reasons why teens are at a higher for being in a car crash and lack of driving experience and their tendency to take risks while driving. Teens drive faster and do not control the car as well as more experienced drivers. Their judgment in traffic is often insufficient to avoid a crash. In addition, teens do most of their driving at night, which can be even more difficult. Standard driver's education classes include 30 hours of classroom teaching and 6 hours of behind-the-wheel training. This is not enough time to fully train a new driver. Teen drivers are more like to be influence by peers and other stresses and distractions. This can lead to reckless driving behaviors such as speeding, driving under the influence of drugs and alcohol, and not wearing safety belts. There is no safe amount that you can drink and still drive. Even one drink can influence your driving offences. “Nowadays, drunk driving has become driving while intoxicated, driving while impaired, driving while under the influence, operating while under the influence (impaired, intoxicated, or whatever), and in many
As a teen I often get stereotyped as a bad driver but this is a very unfair judgment. The fact is I have helped prevent accidents the closest I have ever been to being in an accident was the fault of an older gentleman. Still the numbers do not lie teens have the most accidents of any age bracket. Why do teens have the highest accident rate? I believe it is because of inexperience not bad habits. Most teens have only been driving for a very short time, if at all, when they receive
Third reason of accidents on the road is teenage drivers. “2,739 teenagers died in car accidents in the United States during 2008 ", (drivesteady.com). Some teenagers cause fatal accidents, because of immaturity and lack of experience. Teenagers are very impulsive. Although not intending to hurt anyone, they sometimes drive very aggressively. It is not difficult to find teenagers driving with one hand on the steering wheel, seat pushed back, and with loud music playing. In traffic they go wild, trying to seek attention. They underestimate the risk of what they are doing. All these acts result in serious consequences on the road. Many accidents of young drivers result from their own mistakes.
This shows that teens do not take driving seriously and also do not realize what can happen to them if they continue with bad driving habits. In fact, insurance rates are high enough as it is for teens now. If they get into a car accident, the insurance rates will sky rocket, their parents may have a hard time being able to afford the insurance. Traffic crashes are the leading cause of fatalities for teens. As stated in a magazine, “Drivers ages 16 to 19 are four times more than likely than older drivers to crash” (Brophy). This quote shows that teen drivers are involved in more traffic accidents then older drivers. It has much to do with the young drivers not being safe and making horrible choices while they are driving or in the car with another person. If teens engage in the driving education course, they will definitely become more knowledgeable about all the safe ways to drive when their parents do not have to ride with them anymore. Teen drivers are involved in many car accidents due to unsafe driving habits. A course on safe driving will give the young driver behind the wheel more experience.