Download C784 Applied Healthcare Statistics FINAL QUIZ STUDY GUIDE and more Exams Applied Statistics in PDF only on Docsity!
C784 Applied Healthcare Statistics
FINAL QUIZ STUDY GUIDE
discrete data - Correct answerdistinct values, can be counted, unconnected points (ex. number of students) continuous data - Correct answervalues are within a range, measured not counted, no gaps between data points (ex. time in a race) less than or greater than - Correct answermarked with (parenthesis), open circle on number line less than or equal to greater than or equal to - Correct answermarked with {brackets}, closed/shaded circle on number line prime factorization - Correct answerwriting the number as a product (multiplication) of any prime numbers (ex. 12= 2x2x3) greatest common factor - Correct answerthe largest number that divides all the given numbers evenly (ex. 8 and 10 = 2) least common multiple - Correct answerthe smallest number that can be divided by the given numbers (ex. 16 and 32 = 16) 1 tablespoon =? teaspoons - Correct answer3 teaspoons 1 fluid ounce =? tablespoons - Correct answer2 tablespoons
1 cup =? ounces - Correct answer8 ounces 1 pint =? cups - Correct answer2 cups 1 quart =? pints - Correct answer2 pints 1 gallon =? quarts - Correct answer4 quarts 1 Liter =? milliliter (mL) - Correct answer1000mL 1 kilogram (kg) =? grams - Correct answer1000 grams 1 gram =? milligrams (mg) - Correct answer1000 mg 1 mg =? mcg - Correct answer1000 mcg 1 cc =? ml - Correct answer1 ml 1 fluid ounce =? ml - Correct answer30 ml (or 2 tbsp) 1 Liter =? quarts - Correct answer1.057 quarts 1 tsp =? mL - Correct answer5 mL 1 kg =? lb - Correct answer2.2 lb 1 ounce =? grams - Correct answer28.35 grams
right skewed histogram shape - Correct answerlong tail stretches to the right of the peak left skewed histogram shape - Correct answerlong tail stretches to the left of the peak u-shaped histogram shape - Correct answercontains a valley rather than a single peak uniform histogram shape - Correct answerstraight across, all data appears equal multimodal histogram shape - Correct answertwo or more clear peaks mode - Correct answerthe value that occurs most often in the data set (8, 4, 9, 4, 17, 12, 4....mode = 4) median - Correct answerthe halfway point in a data set (1, 2, 3, 4, 5, 6, 7...median = 4) (1, 2, 3, 4...median = 2.5) mean - Correct answerthe average, add up all the data points and divide by the number of data points there are range - Correct answerdifference between the largest data value and the smallest data value (maximum and minimum) InterQuartile Range (IQR) - Correct answerthe difference between the third quartile (Q3) and the first quartile (Q1) quartiles - Correct answerbreak the data into four equal size groups
correlation coefficient - Correct answer(r), measures the strength of the linear relationship between the variables -r is always between -1 and 1 -the closer r is to 1, the stronger the positive linear correlation -the closer r is to -1, the stronger the negative linear correlation -r = 0 indicates no linear correlation effect of outliers - Correct answerwhen far off the regression line, outliers weaken r explanatory variables - Correct answer(x), possibly cause changes in the response variables, AKA independent variables response variables - Correct answer(y), possibly affected by the explanatory variables, AKA dependent variables two way frequency tables - Correct answercatagorical -> categorical C -> C rows show one variable's categories columns show the other variable's categories joint frequencies - Correct answervalues in the middle of a two way frequency table , the data falling into both rows and columns marginal frequencies - Correct answervalues on the right and bottom side of a two way frequency table, total of the corresponding row or column grand total - Correct answerthe bottom right corner of a two way frequency table, total size of the data set
third quartile - Correct answerQ the median of the data aboe Q standard deviation - Correct answerthe average distance each data point is from the mean Empirical Rule - Correct answerfor normal distributions 68% of data is within 1 standard deviation of the mean 95% of data is within 2 standard deviations of the mean 99.7% of data is within 3 standard deviations of the mean Simpson's Paradox - Correct answer-occurs when a result that appears in groups of data disappears when the groups are combines -can only occur when the sizes of the groups are inconsistent lurking variables - Correct answervariable not included in the study but affects the variable that are included in the study regression equation - Correct answeran equation modeling the relationship between two quantitative variables simple linear equation - Correct answerAKA regression line or line of best fit -x is the explanatory variable -y is the response variable -equation is y = mx + b -used to predict data (plug in values for x and find corresponding values for y) linear interpolation - Correct answerpredictions between known data points
linear extrapolation - Correct answerpredictions larger or small than the known data points p-value - Correct answerthe probability of data occurring by chance significant level - Correct answerthe probability threshold, below which we consider events not happening by chance p-value < significance level - Correct answerresults are significant p-value > significance level - Correct answerresults are not significant experiment - Correct answera situation for which a probability is being examined outcome - Correct answera possible result of an experiment event - Correct answera collection of desired outcomes sample space - Correct answer-universe -set of all possible outcomes fair - Correct answeran experiment where all outcomes are equally likely complement of a set - Correct answereverything NOT in the set disjoint events - Correct answercontain no common outcomes, cannot happen simultaneously (ex. can't be born on Monday and on Wednesday)
Law of Total Probability - Correct answerfor any probability tree, if you multiply alone each path and then sum all the resulting products, you will get 1 (100%) complement formulas - Correct answer-calculate the probability of something NOT happening Probability of Not A is 1 minus the Probability of A Probability Formulas for DISJOINT events - Correct answerP(A and B) = 0 P(A or B) = P(A) + P(B) P(A I B) = P(B I A) = 0 Probability Formulas for INDEPENDENT events - Correct answerP(A and B) = P(A) x P(B) P(A or B) = P(A) + P(B) - [P(A) x P(B)] P(A I B) = P(A) P(B I A) = P(B)
