Worldwide Baccalaureate Secondary school understudies in a Global Baccalaureate (IB) program are set in sped up or progressed courses and should take IB assessments in every one of six branches of knowledge toward the finish of their lesser or senior year. Understudies are scored on a size of 1-7, with 1-2 being poor, 3 fair, 4 normal, and 5-7 incredible. During its first year of activity at John W. North Secondary School in Riverside. California, 17 youngsters endeavored the IB financial matters test, with these outcomes:

Test Grade Number of Understudies 7 1 6 4 5 4 3 4

Compute the mean and standard deviation for these scores.

Question 50

Mercury Focus in Dolphins Natural researchers are progressively worried about the gathering of poisonous components in marine well evolved creatures and the exchange of such components to the creatures' posterity. The striped dolphin (Stenella coeruleoalba), viewed as a top hunter in the marine natural pecking order, was the subject of one such examination. The mercury focuses (micrograms/gram) in the livers of 28 male striped dolphins were as per the following:

1.70 183.00 221.00 286.00 1.72 168.00 406.00 315.00 8.80 218.00 252.00 241.00 5.90 180.00 329.00 397.00 101.00 264.00 316.00 209.00 85.40 481.00 445.00 314.00 118.00 485.00 278.00 318.00

a. Compute the five-number synopsis for the information. b. Develop a container plot for the information. c. Are there any exceptions? d. In the event that you realized that the initial four dolphins were all under 3 years of age, while all the others were over 8 years of age, would this data help clarify the distinction in the size of those four perceptions? Clarify.

Question 51

A gathering of things are arranged by a specific traitX. Y, Zand as indicated by the state wherein they are created: X Y Z

New York 20 5 California 10 5

a. Make a near (one next to the other) bar diagram to analyze the quantities of things of each sort made in California and New York. b. Make a stacked bar diagram to think about the quantities of things of each kind made in the two states c. Which of the two sorts of introduction in parts an and b is all the more handily perceived? Clarify. d. What other graphical techniques could you use to depict the information?