Questions and Answers of Business Statistics Communicating

The accompanying table shows a portion of data that shows an individual’s income (Income in $1,000s), age, sex (F = female, M = male), and marital status (Married; Y = yes, N = no).a. Count the
A social science study conducts a survey of 418 individuals about how often they exercise, marital status, and annual income. A portion of the Fitness data is shown in the accompanying table.a. Sort
The following table lists a portion of the average writing and math SAT scores for the 50 states as well as the District of Columbia, Puerto Rico, and the U.S. Virgin Islands for the year 2017 as
The accompanying data set contains three numerical variables, x1, x2, and x3, and one categorical variable, x4.a. For x4, how many of the observations are less than three?b. Sort x1, x2, x3, and then
The accompanying data set contains three numerical variables, x1, x2, and x3.a. For x1, how many of the observations are greater than 30?b. Sort x1, x2, and then x3 all in ascending order. After the
The accompanying data set contains two numerical variables, x1 and x2.a. For x2, how many of the observations are equal to 2?b. Sort x1 and then x2, both in ascending order. After the variables have
Which of the following statements correctly describe benefits of Structured Query Language (SQL)? Select all that apply. Explain if incorrect. a. SQL can be used to manipulate structured, semi
Which type of relationship―one-to-one (1:1), one-to-many (1:M), or many-to-many (M:N)―do the following business rules describe? a. One manager can supervise multiple employees, and one
Which of the following statements best describes what a foreign key is? Select all that apply. Explain if incorrect. a. It is an attribute that uniquely identifies each instance of the
Which of the following statements correctly identify and describe the key elements of a relational database? Select all that apply. Explain if incorrect. a. A table in a relational database is a
Cassius Weatherby is a human resources manager at a major technology firm that produces software and hardware products. He would like to analyze the net promoter score (NPS) of sales professionals at
Which of the following statements correctly describe the data wrangling process? Select all that apply. Explain if incorrect. a. Data wrangling is the process of retrieving, cleansing,
Last year, Oracle hired three finance majors from the local university. Robert Schneider started with a salary of $56,000, Chun Zhang with $52,000, Sunil Banerjee with $58,000, and Linda Jones with
Which of the following statements about entity-relationship diagrams (ERDs) are correct? Select all that apply. Explain if incorrect. a. An entity usually represents persons, places, things, or
A used car salesperson recently sold two Mercedes, three Toyota, six Ford, and four Hyundai sedans. He wants to record the sales data. a. Organize the data into a fixed-width format (eight
The accompanying table shows a portion of the 30 companies that comprise the Dow Jones Industrial Average (DJIA). For each company, the data set lists the year that it joined the DJIA, its industry,
A professor records the majors of her 30 students. A portion of the data is shown in the accompanying table. a. What is the measurement scale of these data? b. Summarize the results in
Which of the following variables are categorical and which are numerical? If the variable is numerical, then specify whether the variable is discrete or continuous. a. Colors of cars in a mall
Which of the following variables are categorical and which are numerical? If the variable is numerical, then specify whether the variable is discrete or continuous.a. Points scored in a football
Ask 20 of your friends about their online social media usage, specifically whether or not they use Facebook, Instagram, and Snapchat; how often they use each social media portal; and their overall
Find Under Armour’s annual revenue from the past 10 years. Are the data considered structured or unstructured? Explain. Are they cross-sectional or time series data?
Go to www.finance.yahoo.com to get the current stock quote for Home Depot (ticker symbol = HD). Use the ticker symbol to search for historical prices and create a table that includes the monthly
Since 1940, the Billboard magazine has published a variety of weekly music popularity charts. Today, the magazine uses a combination of sales volume, airplay on radio, digital downloads, and online
Recent college graduates with an engineering degree continue to earn high salaries. An online search revealed that the average annual salary for an entry-level position in engineering is $65,000.a.

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