Essay on Statistics

3494 Words14 Pages
Stats Questions II 1.The table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. ??Over that time period, what was the mean daily level of sales? A. ?$3,489.79 ?B. $4,071.42 ?C. $1,643.23 D. $2,829.92 2. The table below displays a week's worth of data on daily sales at the Crank It Louder Music Store. ??Over that time period, what was the median daily level of sales? A. $1,643.23 B. ?$3,489.79 C. ?$3,130.46 D. ?$800.12 3. The histogram below displays the age distribution of the world's billionaires as reported by Forbes Magazine in 2001. ??This distribution is best described as: ?A. Approximately normal. ?B. Strongly skewed to the right. ?C. Bimodal. D. Approximately…show more content…
7. The data in the Excel spreadsheet linked below gives the average monthly price of gold (in dollars per ounce) for the years 1980 to1983. ??Which of the following statistics measures gold price variation in the same units as gold price itself (i.e., dollars per ounce)? A. ?The standard deviation. B ?The variance. C ?The coefficient of variation. D ?None of the above. 8. The data in the Excel spreadsheet linked below gives the average monthly price of gold (in dollars per ounce) for the years 1980 to 1983. ??In which of the years was the coefficient of variation of gold price the highest? A ?1980 B ?1981 C ?1982 D ?1983 9. bizneznuz.com, an online business news agency, conducts a poll. Visitors to the site are invited to click on one of two buttons in order to register that they "agree" or "disagree" with the following statement: "Funding for space exploration should be left entirely to the private sector." ??If bizneznuz.com wants to accurately measure its online readership's support for government-funded space exploration, this poll will deliver a biased and unrepresentative response because: A ?The pool of respondents is self-selected. B ?All respondents have internet access. C ?bizneznuz.com targets mainly the business community. D ?All of the above. 10. A researcher wants to collect data about the study habits of sophomores at Harmond University. From the sophomore class of 2,300 students, she wants to collect a

More about Essay on Statistics

Open Document