Reference no: EM13953211
Suppose that we are interested in studying patients with systemic cancer who subsequently develop a brain metastasis; our ultimate goal is to prolong their lives by controlling the disease. A sample of 23 such patients, all of whom were treated with radiotherapy, were followed from the first day of their treatment until recurrence of the original tumor.
Recurrence is defined as the reappearance of a metastasis in exactly the same site, or in the case of patients whose tumor never completely disappeared, enlargement of the original lesion. Times to recurrence (in weeks) for the 23 patients were: 2, 2, 2, 3, 4, 5, 5, 6, 7, 8, 9, 10, 14, 14, 18, 19, 20, 22, 22, 31, 33, 39, and 195. Calculate the mean, geo-metric mean, and median.
The prize money of the canadian open tennis tournament
: n 1970, the prize money of the Canadian Open Tennis tournament was $15,000. In 2012, the prize money was $2,648,700. What was the percentage increase in the prize money over this period? If the winner's prize continues to increase at the same rate, w..
|
Research the term corporate social responsibility
: Social Responsibility of Business - Research the term "corporate social responsibility;" define the term and discuss its role in business
|
Calculate and compare the variances
: The Data shown in Table E2.25 are from a study that compares adoles- cents who have bulimia to healthy adolescents with similar body com- positions and levels of physical activity. The table provides measures of daily caloric intake (kcal/kg) for ..
|
Snowball and napoleon compare and contrast
: Snowball and Napoleon compare and contrast in many ways. Take examples from the novel and from Russian history to help you write your comparison and contrast essay.
|
Calculate the mean, geo-metric mean, and median
: Recurrence is defined as the reappearance of a metastasis in exactly the same site, or in the case of patients whose tumor never completely disappeared, enlargement of the original lesion. Times to recurrence (in weeks) for the 23 patients were: 2..
|
Calculate the mean, geometric mean, and median
: A group of 12 hemophiliacs, all under 41 years of age at the time of HIV seroconversion, were followed from primary AIDS diagnosis until death (ideally, we should take as a starting point the time at which a person contracts AIDS rather than the t..
|
The elephant in the room
: This is a really long article, but I actually only want you to read from the heading "The Elephant in the Room" until the end of the article.http://www.nytimes.com/2007/01/28/magazine/28nutritionism.t.html?pagewanted=8&_r=2
|
Solving for an interest rate
: You are required to pay $5,000 for college fees for each of the next four years, and a not-quite- as-generous uncle offers to give you $15,187 toward your college fees. What annual interest rate do you need to earn to allow you to invest the money..
|
Check whether the events are dependent or independent
: A student throws a deck of cards into the air and then counts the number of cards that, after landing, are showing the face of the card
|