32. A marketing team specializing in food products set stands in a mall to determine the preference of the mall-goersin choosing and consuming finger-foods. What sampling technique is appropriate in doing this?
(a) cluster sampling(b) purposive sampling(c) convenience sampling (d) systematic sampling
33. A market research company asks a sample of students to rate the taste of a new soft drink. The response scaleis really yummy, yummy, ok, yuck, really yuck. This is an example of a
34. A researcher is studying students in college in PUP. She takes a sample of 400 students from 10 colleges. Theaverage age of selected college students in PUP is
35. A coffee shop wants to know the temperature of coffee that most people prefer. They brew coffee at the typicaltemperature for the shop and then ask customers “Do you prefer coffee to be at this temperature?” and recorda yes or no answer for each customer. What is the level of measurement of the way they measured preferredtemperature?
36. The same coffee shop later repeats the study but this time they ask “Do you prefer coffee to be a lot colder, alittle cooler, this temperature, a little warmer or a lot hotter?” and record the persons response. Now, what isthe level of measurement of the way they measured preferred temperature?
(a) Nominal(b) Ordinal(c) Interval(d) Ratio
37. Determine the characteristics of a Normal Curve.I. The normal curve is bell-shaped and symmetric about the mean.II. The mean, median and mode are not equal.III. The total area under the curve is equal to one.IV. The normal curve approaches, but never touches the x-axis as it extends farther and farther away from themean.
38. Given a normally distribution, find the area under the curve which lies to the right of z = 1.96.
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For items 56 to 60, consider this situation. A researcher has collected the following sample data. 5, 12, 6, 8, 5,
6, 7, 5, 12, 4
39. Find the median.
40. Find the mode.
(a) 5(b) 6(c) 7(d) 8
41. Find the mean.
42. Find the standard deviation.
43. Find the Pearson coefficient of skewness using the value of median.
Problem Solving
A. The PUPCET scores for the math portion of the test were normally distributed, with a mean of 23.4 and a
standard deviation of 4.8. Find the probability that a randomly selected student who took the math portion
of the PUPCET has a score that is
(a) less than 18.
(b) between 21 and 26.
B. Given the following frequency distribution.
Class Interval
Frequency
240 - 259
5
220 - 239
5
200 - 219
12
180 - 199
13
160 - 179
5
140 - 159
10