QBA FinAl ExAm study GuidE With QuEstion And CorrECt AnsWErs upGrAnd Which of the following analytical techniques helps us arrive at the best decision? - correct answerPrescriptive Which of the following gives the proportion of items in each bin? - cor

QBA FinAl ExAm study GuidE With QuEstion And CorrECt AnsWErs upGrAnd Which of the following analytical techniques helps us arrive at the best decision? - correct answerPrescriptive Which of the following gives the proportion of items in each bin? - correct answer-Relative frequency The variance is based on the - correct answer-deviation about the mean Compute the IQR for the following data. - correct answer-9.50 Use technology to compute the standard deviation for the following sample data. - correct answer-6.75 Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 9. Steve has a score of 52. Convert Steve's score to a z-score. (Round to two decimal places if necessary.) - correct answer--1.33 The data dashboard for a marketing manager may have KPIs related to - correct answer-Current sales measures and sales by region A line chart that has no axes but is used to provide information on overall trends for time series data is called a - correct answer-Sparkline Bar charts use - correct answer-horizontal bars to display the magnitude of the quantitative variable. Tables should be used instead of charts when - correct answer-the values being displayed have different units or very different magnitudes A disadvantage of stacked - column charts and stacked- bar charts is that - correct answer-it can be difficult to perceive small differences in areas. __________ is a method of calculating dissimilarity between clusters by calculating the distance between the centroids of the two clusters. - correct answer-Centroid Linkage Euclidean distance can be used to measure the distance between __________ in cluster analysis. - correct answer-Observations Euclidean distance can be used to calculate the dissimilarity between two observations. Let u = (25, $350) correspond to a 25-year-old customer that spent $350 at Store A in the previous fiscal year. Let v = (53, $420) correspond to a 53-year-old customer that spent $4,100 at Store A in the previous fiscal year. Calculate the dissimilarity between these two observations using Euclidean distance. - correct answer75.39 The strength of the association rule is known as __________ and is calculated as the ratio of the confidence of an association rule to the benchmark confidence. - correct answer-Lift A cluster's __________ can be measured by the difference between the distance value at which a cluster is originally formed and the distance value at which it is merged with another cluster in a dendrogram. - correct answer-Durability In a normal distribution, which is greater, the mean or the median? - correct answer-Neither the mean or the median (they are equal) An initial estimate of the probabilities of events is a __________ probability. - correct answer-Conditional The __________ probability distribution can be used to estimate the number of vehicles that go through an intersection during the lunch hour. - correct answer-Poisson All of the following are examples of discrete random variables except - correct answer-Time