The boxplot below shows salaries for CPAs and Actuaries in a town. CPA Actuary + 30 40 50 60 70 80 90 100 110 Salary (thousands of $) Q Select an answer median If a person is making the first quartile salary for a CPA, his earning is equivalent to the minimum salary for an Actuaries, and he is making less than % of Actuaries. first quartile maximum Question Help: B Written Example Message instructor third quartileFind the range, sample standard deviation and inter-quartile range (IQR) of the following data set. \"II-\"Elli! range = (Please enter an exact answer.) standard deviation (3) = :] (Round to one decimal place.) IQR = :] (Please enter an exact answer.) A new number, 103, is added to the data set above. Find the range, sample standard deviation and IQR of the new data set. range = :] (Please enter an exact answer.) standard deviation = :] (Round to one decimal place.) IQR = :] (Please enter an exact answer.) Which measure of spread is less affected by the addition of the extreme observation? 0 Range IQR 0 standard deviation For a 4-unit class like Statistics, students should spend average of 12 hours studying for the class. A survey was done on 20 students, and the distribution of total study hours per week is bell-shaped with a mean of 14 hours and a standard deviation of 2.6 hours. Use the Empirical Rule to answer the following questions. a) 68% of the students spend between C] hours and D hours on Statistics each week. b) 95% of the students spend between C] hours and C] hours on Statistics each week. c) 99.7% of the students spend between C] hours and l:] hours on Statistics each week. an _ The highway mileage (mpg) for a sample of 9 different models of a car company can be found below. m-m Find the mode: :] Find the midrange: :] Find the range: :] Estimate the standard deviation using the range rule of thumb: :] Now use technology, find the standard deviation: :] (Please round your answer to 2 decimal places.) Find the range and standard deviation. The table below gives the number of hours spent watching TV last week by a sample of 24 children. Range = C] (Please enter an exact answer.) Standard Deviation = [:J (Please show your answer to 4 decimal places.) For the data below, which represents a sample with n = 5, answer the questions. Round to 4 decimal places where possible. Find the standard deviation: :] The ages of Michael's five cousins are listed below. 14 16 5 20 11 1) Calculate the mean. H = differences. 2) Fill in the table below: Fill in the differences of each data value from the mean, then the squared x - H ( 2 - 1 ) 2 14 16 5 20 11 3) Calculate the population standard deviation (o). O = N (Please round your answer to two decimal places)The following refer to the following data set: 61 91 40 86 26 27 23 41 51 92 61 What is the mean (a) of this data set? mean = (Please show your answer to one decimal place.) What is the median of this data set? median = What is the mode of this data set? mode =In California, we need more rain to sustain the health of our natural environment, argriculture, and economic. A group of statistics students in Oxnard College recorded the amount of rain during 2016-2017 school year, measuring the intensity by the inches of rain, and the results were: --Illl lI---II The mean (:2) rain intensity: C] inches (Please show your answer to 1 decimal place.) The median rain intensity: C] inches The mode rain intensity: C] inches (Please separate your answers by ',' in bimodal situation. Enter DNE if there is no mode.) 4. .. ..- I'L..-.,. _ u H.- In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Number of ninth graders (Frequency) -z- -_ __ The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 84, 96, and 71, which is 83.7. Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place. Mean of all ninth graders scores = C]
