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Exam 1

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Psychology (SPSS) Quiz on Exam 1, created by Jackie S on 21/09/2024.
Jackie S
Quiz by Jackie S, updated 23 days ago
Jackie S
Created by Jackie S 25 days ago
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Question 1

Question
A researcher is interested in the studying habits of American highschoolers. A group of 25 students is interviewed and the researcher finds that these students study an average of 4 hours per day. For this study, the American highschoolers are an example of a(n) _____.
Answer
  • population
  • sample
  • parameter
  • statistic

Question 2

Question
Determining what political party people associated with (democrat, republican, independent, libertarian) would involve the measurement of a(n) _____ scale of measurement.
Answer
  • Nominal
  • Ordinal
  • Ratio
  • Interval

Question 3

Question
[blank_start]______[blank_end] is the number of times a particular value occurs in a set of data.
Answer
  • frequency

Question 4

Question
The average value is a data set is the [blank_start]_____[blank_end]. The middle value in a data set is the [blank_start]_____[blank_end]. The most common number in a value set is the [blank_start]_____[blank_end].
Answer
  • mean
  • sum
  • standard deviation
  • median
  • midpoint
  • range
  • mode
  • multiple
  • maxim

Question 5

Question
A group of people is asked to report how many pets they have. This would be an example of a _____ skew.
Answer
  • positive
  • negative

Question 6

Question
What is the variance if we know that the Sum of Squares is 36 and the population scores are 6? The answer is [blank_start]6[blank_end].
Answer
  • 6

Question 7

Question
The average cost of an apartment in the US monthly is $1700. A simple of 1000 unit prices from around the U.S is gathered and the mean price is found to be $2300. The difference between these values is called a [blank_start]sampling error[blank_end].
Answer
  • sampling error

Question 8

Question
Which of the following sets of scores has the most variability?
Answer
  • 5, 6,7, 9, 10
  • 7, 8, 9, 10, 11, 12, 13
  • 1, 2, 3, 4, 5, 6
  • 5, 6, 7, 8, 9, 21, 22

Question 9

Question
Which of the following is true for the quantity Σ(X – μ)?
Answer
  • This is the variance, and it is always positive.
  • This is the standard deviation, and it is always positive.
  • This is the variance, and it is sometimes positive.
  • This is the sum of the deviations, and it is always 0.

Question 10

Question
Find the SD for a population of 8 participants, given that the sum of squares (SS) is 32.
Answer
  • 4
  • 2
  • 3
  • 8

Question 11

Question
Given the following data set: 3, 4, 5, 5, 54, 6, 7 ,7, 8, 9 What would be the most appropriate measure of central tendency to use?
Answer
  • Median
  • Standard Deviation
  • Mode
  • Mean

Question 12

Question
If we are looking at the average IQ of all Americans by examining a sample of 50 people, which of the following is true? I. The average IQ of the sample could be greater than the average IQ of the population. II. The average IQ of the sample could be smaller than the average IQ of the population. III. The average IQ of the sample must be the same as the average IQ of the population.
Answer
  • I and II only
  • I only
  • III only
  • I, II, and III

Question 13

Question
Two students, Lauren and Mary, are studying the average age at death of females in the town of Mobile, Alabama, in the year 2011. They are able to obtain all of the female death records from Mobile for the year 2011. Lauren claims that this set of records represents the population for their study. Mary claims that it is only a sample. Who is correct, and why?
Answer
  • Lauren is correct because the study is only about female deaths in Mobile during 2011.
  • Mary is correct because the records only include females.
  • Mary is correct because the records only include records from 2011.
  • Mary is correct because the records are only from Mobile rather than the entire United States.

Question 14

Question
A scientist is studying the effect of temperature on the ability of a plant to grow. She places four plants in environments of four different temperatures. All plants are given the same amount of water and light each day. She measures the height of each plant at the end of a month. Which of the following describes the dependent and independent variables?
Answer
  • The dependent variable is the room temperature; the independent variable is the plant heights
  • The dependent variable is the room temperature; the independent variable is the amount of water.
  • The dependent variable is the plant heights; the independent variable is the room temperature.
  • The dependent variable is the amount of light; the independent variable is the plant heights.

Question 15

Question
Which of these measurements are continuous?
Answer
  • Scores on a math test
  • Time it took to finish a race
  • Favorite color
  • Amount of calories eaten
  • Answers on a 7-point Likert scale
  • Hair type
  • Level of proficiency in piano

Question 16

Question
Based on the graph below, what is NOT the right way to calculate the sums of X?
Image:
Table (binary/octet-stream)
Answer
  • 1 + 1 + 1 + 1 + 2 + 3 + 3 + 4 + 4
  • 4 + 2 + 6 +8
  • 4 x 1 + 1 x 2 + 2 x 3 + 2 x 4
  • 1 + 2 + 3 + 4

Question 17

Question
The following frequency distribution table represents test scores for a class of students. How many students scored less than 70? x f 61-68 2 69-76 6 77-84 12 85-92 5 93-100 1
Answer
  • 2
  • 8
  • 20
  • Cannot be determined

Question 18

Question
A survey collected people's favorite movie genres. The table below shows the corresponding data. Which type of central tendency is an appropriate measurement for this data?
Image:
Tabel 2 (binary/octet-stream)
Answer
  • mean
  • median
  • mode
  • all of the above

Question 19

Question
What score would need to be added to the following data set to make it bimodal?
Image:
Table 3 (binary/octet-stream)
Answer
  • 20
  • 34
  • 36
  • 37

Question 20

Question
For a given set of scores with N = 20, if there are 10 different modes, which of the following is true?
Answer
  • The set contains 10 different scores, each of which has a frequency of 2.
  • The set contains 20 different scores, each of which has a frequency of 1.
  • The situation is impossible.
  • There is nothing that can be known about the data set without more information.
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