In Power BI, what does cardinality most commonly refer to?

True or False: Data cleaning and preparation are not necessary if your dataset is sufficiently small.

What is the primary purpose of storytelling in analytics and visualization?

True or False: Generally in a star schema, a fact table contains the observations or measurements and a dimension table contains data about the objects being observed.

A nonprofit organization raised $18,450 in donations in 2023 and $21,315 in 2024.  What is the percent change in donations from 2023 to 2024?  Express your answer as a percentage rounded to the nearest tenth (e.g., 50.5%) rather than a decimal (e.g., 0.505).

What is the primary purpose of K-Means Clustering?

Plumduff is a folk band that performs sea shanties and Celtic folk songs. In January 2022, Plumduff entered into an oral contract with Donniegale, an Irish-style nautical themed pub, to perform in February 2023 for a total of ten nights (five nights in each of two weeks) at Donniegale for $2,000 each night, paid by check at the end of each week.  The first night went well as the pub crowd was very happy with the performance. The next night, the pub was packed. Donniegale is a large pub that could accommodate nearly 400 customers. On nights with entertainment, Donniegale earned a cover charge as well as the food and beverage income stream.  On the third night, the pub was full to capacity with a line halfway around the block. At the last minute before Plumduff’s performance was scheduled to start, Plumduff’s lead singer demanded an extra $1,000 for each remaining night (7 nights). The crowd was getting restless and chanting the band’s name. Donniegale’s manager agreed to pay the extra $1,000 per remaining night and signed a memo promising to do so. The manager had authority to enter into and modify contracts for the pub.  At the end of the first week, Donniegale’s manager gave Plumduff a check for $10,000 (the amount in the original contract) and refused to pay the extra $3,000 agreed to in the memo. Plumduff refuses to perform the second week and sues Donniegale. Discuss.

A television director and a comic book writer entered into a contract to bring the writer’s best-selling comic book series to television as a miniseries. The writer agreed to write a television script based on his comic books and to transfer copyright of the script to the director. In return, the director promised to produce and direct the miniseries and to pay the writer a percentage of all ad revenues from the show. The writer completed the script on schedule. Midway through filming the miniseries, the director received a long-desired opportunity to direct a feature-length movie. Unable to direct both projects simultaneously, the producer assigned his contract with the comic book writer to the cable network that would be airing the series. The network promptly notified the comic book writer of the assignment. Despite the writer’s protests that the director’s artistic vision was needed for the project, the network completed the rest of the miniseries as planned, using its own, experienced and very competent director for the final episodes. The miniseries was initially well received, but the ratings and ad revenues for the final episodes were much lower than anticipated. After the series aired, critics noted that the artistry of the miniseries diminished after the director left the project. The writer sued the director, alleging that the contract was not assignable by the director and that substitution of the cable network’s own director had caused the decrease in ratings. Is the director liable to the comic book writer?

A father and a mother had been married for 30 years and had one adult son. The father and the mother agreed that each would make a will leaving his or her entire estate to the other, and when the surviving spouse died, the surviving spouse’s entire estate, including any inheritance received from the predeceased spouse, would be left to their son. The father, the mother, and the son visited a lawyer, who prepared wills for the father and the mother that carried out their testamentary intentions. The lawyer also prepared an agreement, which was signed by the father and the mother, in which each promised not to change the testamentary disposition benefiting the son. The son, who was present during the execution of the documents, was asked by the mother and the father if he agreed to the estate plan. He replied that he did. Shortly thereafter, the mother died. After collecting his distribution of the estate, the father moved in with his high school sweetheart. The father then made a new will, which was in effect at his death, leaving his entire estate to the sweetheart. If the son sues the father’s estate, what will he recover?

A tortfeasor injured a victim in an auto accident. While the victim was consequently hospitalized, the tortfeasor’s liability insurer settled with the victim for $15,000. The victim gave the insurer a signed release and received a signed memorandum wherein the insurer promised to pay the victim $15,000 within 30 days. When the victim left the hospital two days later, the hospital demanded payment of its $15,000 stated bill. The victim gave the hospital his own negotiable promissory note for $15,000, payable to the hospital’s order in 30 days; as security, the victim also assigned to the hospital the settlement memorandum from the insurer. Later, it was discovered that the tortfeasor was an irresponsible minor. In view of the tortfeasor’s age and irresponsibility when the insurer issued the liability policy, can the hospital recover on the assignment?