STAT200 Quiz part 2

Question: #4844

STAT200 Quiz part 2

9. Which of the box plots on the graph has a large positive skew and why? Which has a large negative skew and why?

8. You know the minimum, the maximum, and the 25th, 50th, and 75th percentiles of a distribution. Which of the following measures of central tendency or variability can you determine?

mean, median, mode, trimean, geometric mean,

range, interquartile range, variance, standard deviation

80. If the data were collected by asking the first 111 people who entered the store, then the type of sampling is:

a. cluster

b. simple random

c. stratified

d. convenience

CHEM Quiz 2 .docx 23 KB
Stat quiz part 2.docx 91 KB

Solution: #4908

Quiz 2 Multiple Choice /4 question

Quiz 2 Multiple Choice (3 points each). Identify the choice that best completes the statement or answers the question. __C__ 1. Separating a mixture of iron and sulfur can be done a. by filtration b. dissolving in water c. with a magnet d. by burning _ B___ 2. In the balanced equation, 2 Al + 6 HCl  2 AlCl3 + 3 H2, the sum of the coefficients of the reactants is a. 5 b. 8 c. 13 d. none of these ____ 3. The equation, 2 C(s) + O2(g)  2 CO(g), tells us a. the number of atoms of each kind in reactants and products is the same b. carbon monoxide (CO) is a product c. two atoms of carbon undergo reaction d. all of these _ A___ 4. What prefix is the largest? a. mega b. centi c. micro d. kilo __A__ 5. When coal and fuel oil are burned, what two primary pollutants are formed? a. SO2 and CO2 b. HNO3 and H2SO4 c. CO and O3 d. hydrocarbons and NO2 __D__ 6. In air pollution abatement a. all pollutants are necessarily eradicated b. the amounts of pollutants are decreased c. some pollutants are eradicated necessarily d. all of the above __C__ 7. Which atmospheric region contains the protective ozone layer? a. troposphere b. mesophere c. stratosp...