1. Indicate whether each of the following is a constant or a variable (5 points)

a. Resting pulse rate – Variable

b. Number of bits in a terabyte – Constant

c. Peso equivalent to a Swiss Franc – Variable

d. Number of inches in a mile – Constant

e. Number of neutrons in a carbon atom – Constant

2. Indicate whether the following variables are quantitative or qualitative and specify the scale of measurement. (10 points)

a. Admitting diagnosis of patients to a mental hospital – Qualitative, Nominal Scale

b. Underarm temperature of day-old infants born in a hospital – Quantitative (Continuous), Interval Scale

c. Viral DNA load (copies/ml) – Quantitative (Discrete), Ratio Scale

d. Body Mass Index – Quantitative (Continuous), Ratio Scale

e. Age at diagnosis of breast cancer – Quantitative (Discrete), Interval Scale

3. Multiple Choice (2 points). A nominal scale is used for: A

a. All categorical data

b. Discrete data with categories that do not follow a natural sequence

c. Continuous data that follow a natural sequence

d. Discrete data with categories that follow a natural sequence

e. Quantitative data

4. A study of 275 patients admitted to a hospital during the past year revealed that, on the average, the patients lived 15 miles from the hospital (6 points)

a. What is the variable of interest?

The variable of interest include the distance of a patient’s home from a hospital or its proximity to the area.

b. How many measurements were used in calculating the reported result?

2 measurements were used in calculating the reported results. Median and Mean were both used in the reported results

c. What measurement scale was used?

Ratio-level scale was used.

5. True or False (2 points).

a. Data in the ratio-scale can be transformed to the nominal scale. TRUE

...GMB 713
PROBLEMSET NO. 2
PROBLEM SOLVING: Solve the following problems. Show all pertinent solutions.
1. A car battery dealer is trying to determine which of the brands of car battery he is selling has a longer life span. He conducted an investigation by interview his customers and was able to get the following results:
Brand X Brand Y
Mean life span...

...Trajico, Maria Liticia D.
BSEd III-A2
REFLECTION
The first thing that puffs in my mind when I heard the word STATISTIC is that it was a very hard subject because it is another branch of mathematics that will make my head or brain bleed of thinking of how I will handle it. I have learned that statistic is a branch of mathematics concerned with the study of information that is expressed in numbers, for example information about the number of times...

...Feenstra and Taylor, “International Trade”, 2nd Edition. We follow the textbook very closely in class and cover about 70% of its contents.
2. Yeaple, Study Guide for Feenstra and Taylor’s International Trade, 2nd Edition. We take many practice problems from the Study Guide.
5 copies of the textbook (2nd edition) and 5 copies of the Study Guide (2nd edition) are on reserve at Parrish (the management-and-econ library).
Distribution of homework and other materials:...

...Me1
ProblemSet #2
The US College Enrollment and the “Third Law of Demand”
A theorem proposed by Professors Alchian and Allen in their text, University Economics (1964) has had several rebirths of interest in the literature. The so-called “third law of demand,” or “relative price theorem,” holds that a fixed cost added to a good of varying quality causes the consumer to prefer the category considered of higher quality to the lower.
Recently a number of...

...EC 109
Autumn 2011
Dr. Mani
ProblemSet 2
Due Date: Oct31, Monday – between 9 & 11 AM in room S 2.132
Please keep a copy of your assignment and show all your work clearly.
(1) Mr. J. Bond, a retired movie actor, consumes only grapes and the composite good Y (i.e. price of Y is £1). His income consists of £10000 a year from his investment fund plus the proceeds of whatever he sells of...

...Energy
1. A man climbs on to a wall that is 5 m high and gains 2200 J of potential energy. What is the mass of the man?
Given: Formula:
h = 5 m m = PE/gh
PE = 2200 J
Solution:
m = 2200 J / (9.8 m/s2 x 5 m)
m = 49 kg
2. Calculate the kinetic energy of a 500 kg car travelling at 50 m/s.
Given: Formula:
m = 500 kg KE = mv2/2
v = 50 m/s
Solution:
KE = 500 kg x (50 m/s)2 / 2
KE = 625 000 J
Power
3. Riley climbs a flight of stairs in 3 minutes. If...

...GENERAL BIOCHEMISTRY
ProblemSet No. 1
Answered by: Andrea Rose A. Fajardo of BSFT 2-1N
1. Calculate the pH of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pKa=4.76) of:
a. 2:1
pH = 4.76 + log[2]/[1]
= 4.76 + 0.3010
= 5.06
b. 1:4
pH = 4.76 + log[1]/[4]
= 4.76 + (-0.6021)
= 4.16
c. 6:5
pH = 4.76 + log[6]/[5]...

...BE 13.8
Vertical analysis (common-size) percentages for Vallejo Company’s sales, cost of goods sold, and expenses are listed below:
VERTICAL ANALYSIS 2012 2011 2010
Sales 100.0% 100.0% 100.0%
Cost of goods sold 60.5 62.9 64.8
Expenses 26.0 26.6 27.5
Net Income 13.5 10.5 7.7
Did Vallejo’s net income as a percent of sales increase, decrease, or remain unchanged over the 3 year period. Provide numerical support for your answer.
Sales – Cost of Goods Sold – Expenses = Net Income
100 –...

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