Study Guide for exam 2
Study Guide for exam 2 STAT 110 001
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This 4 page Study Guide was uploaded by Mackenzie Shapiro on Sunday September 27, 2015. The Study Guide belongs to STAT 110 001 at University of South Carolina taught by David B. Hitchcock (P) in Summer 2015. Since its upload, it has received 136 views. For similar materials see Introduction to Statistical Reasoning in Statistics at University of South Carolina.
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Date Created: 09/27/15
Stat Study Guide for exam 2 The portion of a clinical trial that measures the bene ts and risks of a drug after FDA approval is a Phase 1 b Phase 2 c Phase 3 d Phase 4 The following description should be used to answer questions 2 and 3 A mass spectrometer is used to detect levels of arsenic in a patient s hair A normal level of arsenic in the hair is 65 mglOOg What is the unit of measurement a Patients hair b Mg100g c Mass spectrometer d Arsenic level The variable is a Patients hair b Mg100g c Mass spectrometer d Arsenic level In a systematic distribution one should report a Median and standard deviation b Mean and standard deviation c Median and quartiles d Mean and quartiles What could cause bias or variation in the measurement of the unemployment rate a Response error b Changes in the wording of the questionnaire c Nonresponse d All of the above e None of the above A rate is given as a A fraction b A proportion c A percentage d All of the above 7 T or F A way to reduce bias is to get a better measuring instrument 8 Categorical Variables place into one of several categories 9 What is a reasonable way to categorize data a Data table b Random papers c Do not categorize it at all d None of the above 10 The distribution of a variable indicates what two things and 11 charts and graphs are not appropriate for summarizing quantitative data 12 Line graphs a Use a picture rather than bars like in a bar graph b Present proportions as wedges c Show the patterns of variation in a variable over a period of time d All of the above 13 Histograms are a convenient way to show the distribution of variables 14 An outlier is a A data value that doesn t follow the overall pattern of the bulk of data b A data value that follows the overall pattern of the bulk of data c A data value that is underneath the graph d A data value that is nonexistent 15 Which of the following are names of shapes of distribution choose all that apply Symmetric Skewed Unicycle Unimodal Unison Bimodal Biason LP thPPP39F 16 What can stemplots also be called 17 How is Median normally denoted a N b Med c Md d M 18 If n is then n1 2 is not a whole number and so the median will be halfway between two data values Even Odd Neither Both goom 19 if n is then the median is an actual data value the one in position n1 2 in the ordered data set Even Odd Neither Both goom 20 Quartile 2 can also be known as QZ The median The range The average A and B DP00quot 21 True or False This 5number summary consists of The minimum value Ql the median Q3 and the maximum value 22 True or false the boxplot is a graphical presentation of the histogram 23 How is standard deviation denoted 90 3 71 39D quotlt 1 D 2 B 3 D 4 B 5 D 6 D 7 T 8 Individuals 9 A 10 What values a variable can take and how often it takes those values 11 Pie and bar 12 C 13 Quantitative 14 A 15 A b ol f 16 Stem and leave plot 17 D 18 A 19 B 20 E 21 T 22 F it s a graphical presentation of the 5 number summary 23 D
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