Quiz
Exam 1
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Perguntas do quiz (20)
1A 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) _____.- Apopulation
- Bsample
- Cparameter
- Dstatistic
2Determining what political party people associated with (democrat, republican, independent, libertarian) would involve the measurement of a(n) _____ scale of measurement.
- ANominal
- BOrdinal
- CRatio
- DInterval
3[blank_start]______[blank_end] is the number of times a particular value occurs in a set of data.
- Afrequency
4The 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].
- Amean
- Bsum
- Cstandard deviation
- Dmedian
- Emidpoint
- Frange
- Gmode
- Hmultiple
- Imaxim
5A group of people is asked to report how many pets they have. This would be an example of a _____ skew.
- Apositive
- Bnegative
6What 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].
- A6
7The 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].
- Asampling error
8Which of the following sets of scores has the most variability?
- A5, 6,7, 9, 10
- B7, 8, 9, 10, 11, 12, 13
- C1, 2, 3, 4, 5, 6
- D5, 6, 7, 8, 9, 21, 22
9Which of the following is true for the quantity Σ(X – μ)?
- AThis is the variance, and it is always positive.
- BThis is the standard deviation, and it is always positive.
- CThis is the variance, and it is sometimes positive.
- DThis is the sum of the deviations, and it is always 0.
10Find the SD for a population of 8 participants, given that the sum of squares (SS) is 32.
- A4
- B2
- C3
- D8
11Given 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?- AMedian
- BStandard Deviation
- CMode
- DMean
12If 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.- AI and II only
- BI only
- CIII only
- DI, II, and III
13Two 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?- ALauren is correct because the study is only about female deaths in Mobile during 2011.
- BMary is correct because the records only include females.
- CMary is correct because the records only include records from 2011.
- DMary is correct because the records are only from Mobile rather than the entire United States.
14A 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?- AThe dependent variable is the room temperature; the independent variable is the plant heights
- BThe dependent variable is the room temperature; the independent variable is the amount of water.
- CThe dependent variable is the plant heights; the independent variable is the room temperature.
- DThe dependent variable is the amount of light; the independent variable is the plant heights.
15Which of these measurements are continuous?
- AScores on a math test
- BTime it took to finish a race
- CFavorite color
- DAmount of calories eaten
- EAnswers on a 7-point Likert scale
- FHair type
- GLevel of proficiency in piano
16Based on the graph below, what is NOT the right way to calculate the sums of X?
- A1 + 1 + 1 + 1 + 2 + 3 + 3 + 4 + 4
- B4 + 2 + 6 +8
- C4 x 1 + 1 x 2 + 2 x 3 + 2 x 4
- D1 + 2 + 3 + 4
17The 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- A2
- B8
- C20
- DCannot be determined
18A 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?
- Amean
- Bmedian
- Cmode
- Dall of the above
19What score would need to be added to the following data set to make it bimodal?
- A20
- B34
- C36
- D37
20For a given set of scores with N = 20, if there are 10 different modes, which of the following is true?
- AThe set contains 10 different scores, each of which has a frequency of 2.
- BThe set contains 20 different scores, each of which has a frequency of 1.
- CThe situation is impossible.
- DThere is nothing that can be known about the data set without more
information.
Informações
- Descrição
- Psychology (SPSS) Quiz sobre Exam 1, criado por Jackie S em 21-09-2024.
- Autor
- Jackie S
- Idioma
- English
- Visualizações
- 17
- Etiquetas
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