Anatomy and Physiology Lab I

Clinical Immunology

Microbiology

Organic Chemistry I

Business and Economics

ECON | 3790 | Business and Economics | lecture_notes |Sample Midterm Exam II Econ 3790: Statistics for Business and Economics Instructor: Yogesh Uppal You are allowed to use a standard size (8.5*11) cheat sheet and a simple calculator. Please write all the answers with a BALL-POINT PEN or an INK PEN. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question and

1. Why do you think they incubated his cells with the ﬂu virus? In this case, PBL from the individual is incubated with the ﬂu virus with aim to prime the lymphocyte, especially CTL. Priming is essenal to get the fast and heighten recall response against the same angen later me point such as second or further exposure of the same angen. 2. Why did they co-culture his irradiated, virus infected cells with some of his cells that had not been virus infected or irradiated? First of all, they irradiated the virus and then used with an aim; they do not want to replicate the ﬂu virus in the culture. They were only interested to acvate the CTL cell which is present in PBL of that individual. 3. What cells were responding to the angen? Against any type of viral infecon, cytotoxic T lymphocytes cells are eﬀector cells. These CTL cells are acvated and produce perforin and granzyme to kill the pathogens. 4. Why did the cells have to incubate together for 5 days? The cells have to incubate together for 5 days because in order for the generaon of heightening immune response against the pathogen to happen, it requires a large number of monoclonal angen speciﬁc cells to produce eﬀector molecules. The generaon of eﬀector molecules takes longer than 72 hours to produce. 5. What are target cells? A cell which bears receptors for a hormone, drug, or other signaling molecule, or is the focus of contact by a virus, phagocyte, nerve ﬁber, etc. 6. Which target cells would you expect to be lysed? I would expect the target cells from child 1, 2 and 4 to be lysed. 7. If target cells were obtained from unrelated individuals selected at random, what results would be expected? If target cells were obtained from unrelated individuals selected at random, the results would be inconclusive. Cells could not be present in Ag and therefore could not be lysed.

BIOL | 3703 | Clinical Immunology | homework | 1. Why do you think they incub

Mode  The mode of a data set is the value that occurs with greatest frequency.  The greatest frequency can occur at two or more different values.  If the data have exactly two modes, the data are bimodal.  If the data have more than two modes, the data are multimodal. Mode  Modal value for our Go Penguins example is 4 TDs. Percentiles  A percentile provides info

ECON | 3790 | Business and Economics | lecture_notes |Mode  The mode of a data set is the value that occurs with greatest frequency.  The greatest frequency can occur at two or more different values.  If the data have exactly two modes, the data are bimodal.  If the data have more than two modes, the data are multimodal. Mode  Modal value for our Go Penguins example is 4 TDs. Percentiles  A percentile provides info

Crosstabulations and Scatter Diagrams  So far, we have focused on methods that are used to summarize data for one variables at a time  Often, we are really interested in the relationship between two variables  Crosstabs and scatter diagrams are two methods for summarizing data for two (or more) variables simultaneously Crosstabs  A crosstab is a tabular

ECON | 3790 | Business and Economics | lecture_notes |Crosstabulations and Scatter Diagrams  So far, we have focused on methods that are used to summarize data for one variables at a time  Often, we are really interested in the relationship between two variables  Crosstabs and scatter diagrams are two methods for summarizing data for two (or more) variables simultaneously Crosstabs  A crosstab is a tabular

Econ 3790: Business and Economics Statistics Instructor: Yogesh Uppal yuppal@ysu.edu The equation that describes how the dependent variable y is related to the independent variables x , x , . . . x and an error term is called the multiple regression model . Chapter 15: Multiple Regression Model y y = =   0 0 + +   1 1 x x 1 1 + +   2 2 x x 2 2 + + . . . + . . . +   p p x x p p + +   whe

ECON | 3790 | Business and Economics | lecture_notes |Econ 3790: Business and Economics Statistics Instructor: Yogesh Uppal yuppal@ysu.edu The equation that describes how the dependent variable y is related to the independent variables x , x , . . . x and an error term is called the multiple regression model . Chapter 15: Multiple Regression Model y y = =   0 0 + +   1 1 x x 1 1 + +   2 2 x x 2 2 + + . . . + . . . +   p p x x p p + +   whe

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