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For the following questions, would you collect information using a sample or a population? |
(a) | To calculate the percentage of car owners in New York City | | | | Population |
(b) | To know how many different private airlines provide service in the United States | | | | Sample |
(c) | To estimate weekly earnings of computer programmers in United States | | | | Sample |
(d) | To find the marks of a class of 20 students in a physics exam | | | | Population | eBook Link
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From the data in the Statistical Abstract of United States represented below with details, choose the kind of scale that can be
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The states of Connecticut and Massachusetts were ranked 1 and 2 in the survey of individual income in 2004. | | Nominal | | Ratio | | Interval | | Ordinal | eBook Link
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Two thousand one hundred and forty frequent business travelers are asked which midwestern city they prefer: Indianapolis, Saint Louis, Chicago, or Milwaukee. 180 liked Indianapolis best, 460 liked Saint Louis, 1240 liked Chicago, and the remainder preferred Milwaukee. Develop a frequency table and a relative frequency table to summarize this information. (Round relative frequency to 3 decimal places.) | City | Frequency | Relative Frequency | Indianapolis | 180 | 0.090 | St. Louis | 460 | 0.230 | Chicago | 1,240 | 0.620 | Milwaukee | 120 | 0.060 | |
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Molly's Candle Shop has several retail stores in the coastal areas of North and South Carolina. Many of Molly's customers ask her to ship their purchases. The following chart shows the number of packages shipped per day for the last 100 days. |
(a) | What is this chart called? | | | | Histogram |
(b) | What is the total number of frequencies? | | | | 90 |
(c) | What is the class interval? | | | | 5 |
(d) | What is the class frequency for the 0 to 5 class? | | | | 5 |
(e) | What is the relative frequency of the 0 up to 5 class? (Round your
2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?
The United States is the third most populated country in the world. This country holds about 4.5% of the world’s population. The U.S. population is currently estimated to have 308.7 million persons. This number is more than double of the population from 1950. Besides the fact of the population has doubled its size, the population has also become qualitatively different from the one from 1950. As noted by the Population Reference Bureau, “The U.S. is getting bigger, older, and more diverse.” The growth of the population is the result of the trends over time in the relationship of increased births, decreased deaths, and increased net immigration.
Colby, S. & Ortman, J. (2015). Projections of the Size and Composition of the U.S. Population: 2014 to
Dealers The smallest dealer had 11 cars sold and the largest had 154 cars sold. If you were going to create a frequency distribution of the number of cars sold using six classes in your frequency distribution, which of the following might be a
22) Which statement is true of a regression line that is superimposed on the scatter plot?
Present local data from a city, county, or state for three comparable locations in size from three different regions of the country (e.g., Indianapolis, Austin, and San Francisco). This information should be found on official government websites.
Please enter the numbers here so that I know that you know how to read the SPSS output. Please paste your SPSS output right here where it belongs.
2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?
This is to understand comparable numbers as to why certain groups require or refuse this service
The first variable considered is Location, a categorical variable. The three subcategories are Urban, Suburban and Rural. The frequency distribution and pie chart are included. Measures of central tendency and descriptive statistics are not calculated due to the categorical nature of the variable.
o 2.37, 2.38, 2.44, 2.46, 2.54, 2.64, 2.68, 2.79, 2.85, 2.89, 2.93, 2.94, 2.106, and 2.108
Reprinted from. U.S. Census Bureau (2010). Profile of General Population and Housing Characteristics, 2010 Demo Graphic Data.
Average size of a class is 22 students. They have 44 clubs and sports, they have produced 60
The data I will use comes from the 2010 implementation of the GSS. The GSS is a project of the independent research organization National Opinion Research Center (NORC) at the university of
The objective of this chapter is to describe the procedures used in the analysis of the data and present the main findings. It also presents the different tests performed to help choose the appropriate model for the study. The chapter concludes by providing thorough statistical interpretation of the findings.