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The class levels of thets rcs are sown the right, where Ft, So, and r doeman, sophomore to cope parts( union, and senic respecively Use th through (d Determine a frequenay disirbution Class Level FrequencY So Sr b. Obtain a relative-frequengy Class Level ↓ RelativeFrequenc. Fr So Sr Type integers or decimals) c. Draw a ple chart. Choose the correct chart below OB. O c. So 27 Jr 22.5% so 37 so 30% -22.5% So 32 Jr25% 20% d. Construct a bar chart. Choose the correct chart below OA. O C. 山! Class Level Class Level
Practice Test 19 A simple quantitative data set has been provided. Use limit grouping with a first class of 0-4 and a class width of 5 to complete parts (a) through (d) for this data set 24 8 15 5 5 5 19 28 25 20 26 17 3 51 27 3 26 17 11 .Determine a frequency distribution Frequeney Class 0-4 . Ra b. Obtain a relative-frequency distribution. Class 0-4 (1 Relative Frequency Type integers or decimals, Do not round.) c. Construct a frequency histogram based on your result from part (a).Choose the correct histogr О в. OD. O A. 0 10 20 3 Class Class Class Class d. Construct a relative-frequency histogram based on your result from part (b). Choose the corre OA. о в. Ос. O D. L 0.2 10 20 Class Class Class 0 10
Pracace Test measured The ve requency histogram for the data is shown to sanle of 50 Ancae peican aggs were collected and the concentralion ofa n parts per mition (ppm) was 0 1 30 tio 190 270 350 430 Pollutant cone, (ppm Whih of theowing best describes the given distribution? B. The dsbribution ia nearly symmetric O C. The diaribution i right skewed A vudys published information have the folowing ages, in years. Complete parts (a) through (d) below. toble aith information about ages of people in a particular region. A sample of five residents fromth etbo a. Determine the range of these ages The range is mpany your answer Σ(n--2 21-15)2, b. Find the sample standard deviation of these ages by using the defining formula s-1where n is the nis sample size and x is the sample mear The standard deviation is Round to one decimal place as needed.) c. Find the sample standard deviation of these ages by using the computing formula s the sample size. The standard deviation is (Round to one decimal place as needed.) d. Compare your work in parts (b) and (c). , where r The answer to part (b) is (1)the (1) O the same as the answer to part (c). O different from The quąntitative data set under folftwing question. between 7 and 25 Approximately consideration has roughly a bell-shaped distribution. Apply the empirical rule to answer the has a set has mean 16 and standard deviation 3. Approximately what percentage of the observations lie %ofthe observations le between 7 and 25. Type an integer or a decimal. Round to one decimal place as needed.) comapiv1/prin/math
The quanitatlive data set under consideration has roughly a bell-shaped distrbution Apply the empirical rule to answer the ollowing question A guantitalive data set of size 90 has mean 38 and standard deviation& A Approximately pproximately how many observations lie between 30 and 407 observations le between 30 and 40 (Round to the nearest whole number as needed.) 8. Provided below is a simple data set for you to practice finding descripive measures, For the data set, complete parts (o) through (c). 3,5,6,8,9 3,56,8, a. Obtain the quartiles Q1 (Tpe integers or decimals. Do not round.) b. Determine the interquartile range 3 · The interquartile range is Type an integer or a decimal. Do not round.) c. Find the five-number summary (Type integers or decimals. Do not round. Use ascending order.) possible points and are told that that mean score is 284 and that the standard Suppose that you take an exam with 433 deviation is 27. You are also told that you got 368. Did you do well on the exam? Explain your answer. Determine the z-score and interpret this score. 9. - This is standard deviations (1)- the m A score of 368 has a z-score of foreis exam. The (2)- _ states that approximately 99.7% of the observations lie within (3) standard deviations of the mean. Since this score is (4)standard deviations (5); this is a (6) score. (Round to two decimal places as needed.) the r (3) O four O one O more than three O less than two O less than three (1) O above (2) O Chebyshevs rule (4) O three-standard-deviation rule O empirical rule O five O two O three Q below (5) O above (6) O bad . O below Ogood
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Answer #1

Solution:-

a) b)

Class leve reqencyelative frequency Fr So Jr Sr Total 0.2 0.3 0.225 0.275 12 40

c) (B)

B. so 30% Jr 22.5% r27.5%

d) (B)

0.6- ulil r So Je S Class Level

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