WGU C955 Latest Update – Complete and Accurate (Wrap before OA)

WGU C955 Latest Update – Complete and Accurate (Wrap before OA) Just categorical pie chart ( part of a whole ) or bar chart just quantitative histogram ( for intervals) stem plot ( for exact values ) or boxplot or dot plot ( less common) categorical > categorical contingency - (two way) table to create conditional percentages Quantitative > Quantitative scatterplot and use correlation coefficient categorical > quantitive side by side boxplots and use five number summary histogram use for intervals **** this is only Quantitative stem plot use for exact values *** this is only quantitive pie chart just categorical data bar chart relative frequencies only categorical data five number strategy min q1 median q3 max a study is conducted on the possible relationship between the number of new car high-performance hybrid purchases and state unemployment rates. Which numerical measure is appropriate for this situation? correlation summary because they both are Quantitative and use scatterplot a new study examines the possible relationship between the amount of american ginseng taken by men and their timed performance completing a 12 mile mtn course. What numerical measure is appropriate for this situation? they both are quantitative I would use a scatterplot and correlation summary ** then go for a ride and embrace swoopy singletrack just cause! Nordic track wants to know what the median age is for its most popular skier so they can focus on aligning their marketing efforts. Age & frequency follow 28, 2: 33,4: 40,6: 42,9: 49,8: 50,5. What is the median age? 42 a normally distributed data set has a mean of 200 and a standard deviation of 20. What % of the data falls between 180 and 200? 34% as 68% would represent the % between 180 <>220 and you need to reduce by half per the question We have an expert-written solution to this problem! a medical group is studying health and working on two studies 1st study: To study the effects of ashwagandha they selected 8000 students from WGU taking ashwagandha and followed their mental health for 8 months. 2nd study: To study the effects of Jiaogulan tea on 1700 men and their ability to manage stress and longevity they followed their health for 8 years. What is true regarding these amazing two studies both studies are observational **** ASK is there control ???? what happens when you see AND in a probability question ( no throwing anchors or biting bats ears ) you, NOT ewe would multiply and remember when you multiply . decimals they become SMALLER !!! .40 x .40 = .16 & remember to sound off the sirens you have got this !!! suddenly while surfing in Hi you see OR spelled out in seaweed having taken stats you immediately know you want to ADD seaweed to dry for snacking later when you ADD in stats you INCREASE the odds so its always increasing as is your brain power and you smell pretty good 2 Lake Tahoe at 6' elevation ish has decided they want to REMOVE outliers in neighboring areas. What happens with their relationships now? while slightly oxygen-deprived removing outliers ALWAYS strengthens relationships so hug someone today but consciously with intention 2 graphing lines for y = -2x +9 x=1 y = -2(1) +9 y = -2 +9 y = 7 1,7 equality of 2y + 6 > 20 Graph the solution ( just #s ) 2y +6 >20 2y > 20 -6 ** note subtract to make equal 2y/2 > 14/2 ** note doing both to each side y = 7 When both variables are quantitative, how is a scatterplot created? points are plotted on a coordinate plane based upon their ordered pairs Which graphical display is most appropriate when both variables are quantitative? scatterplot A marketing company is conducting a study examining the relationship between average monthly spending (in dollars) and the monthly amount spent on eating out at restaurants (measured in dollars)which of the following graphical displays should be used? scatterplot In a two-way table, what does the sum of the joint frequencies in one row equal? marginal frequency On a horizontal side-by-side box plot, what is displayed on the horizontal axis? quantitative response variable When both variables are quantitative, what best describes the template on which the data is displayed? the coordinate plane Which graphical display is most appropriate when both variables are categorical? two way table A sales manager is analyzing the monthly sales level (measured in dollars) for two sales representatives (Sales Rep A and Sales Rep B) in the Northeast Region. Which of the following labels best fits the explanatory and response variables? Explanatory is sales rep and response is monthly sales level A sales manager is analyzing the monthly sales level (measured in dollars) for two sales representatives (Sales Rep A and Sales Rep B) in the Northeast Region. What would you use for the graphical display side by side box plot If both variables are categorical, a two-way frequency table is used to display the data. If the explanatory variable is categorical and the response variable is quantitative we can use the five-number summary A scatterplot always shows the explanatory variable on the horizontal, or x-axis. true x is in explanatory The strength of the correlation between two variables can be measured by which statistic Correlation coefficient (