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- From Mathematics, Statistics
- Due on 28 Jun, 2015 02:13:00
- Asked On 27 Jun, 2015 01:23:32
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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

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- Submitted On 28 Jun, 2015 02:27:43

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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...

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- Submitted On 28 Jun, 2015 05:14:42

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