Questions and Answers of Statistics Social Sciences

The following data represent the height of 26 statistics students as measured in inches:a. Create a frequency table for these data.b. Create a histogram for these data with an interval width of 1
Create a pie chart showing the percentage of subjects in Table 3.1 who gave each response for the language development data in the Waite et al. (2015) study.Table 3.1
Build a stem-and-leaf plot for the sibling age data in Table 3.1.Table 3.1
A distribution has a skewness of –0.14 and a kurtosis of +0.09.a. Draw approximately what this distribution should look like.b. What terms would you use to describe this distribution?
A distribution has a skewness of +4.1 and a kurtosis of –1.1.a. Draw approximately what this distribution should look like.b. What terms would you use to describe this distribution?
A distribution has skewness of –2.5 and a kurtosis of +1.8.a. Draw approximately what this distribution should look like.b. What terms would you use to describe this distribution?
Using the data in Table 3.1, make a frequency table and a histogram for the language development variable data in the Waite et al. (2015) study.Table 3.1
When comparing the frequency tables in this chapter (Table 3.3 and the frequency table in the guided practice section), Myeongsun noticed that the proportions in the bottom row of each table (labeled
In Figure 3.2, why do the intervals span from 0.5 to 1.5, from 1.5 to 2.5, etc., when all of the numbers in the dataset are whole numbers?Figure 3.2 1.5 2.5 5- Height of bar indicates 4 number of
What is an advantage of scatterplots over other visual models described in this chapter?
What are the skewness and kurtosis values of the normal distribution?
Explain the difference between a platykurtic distribution and a leptokurtic distribution.
Skewness is a measurement of what aspect of a shape of a distribution?
Is the normal distribution unimodal or bimodal?
Explain the similarities and differences between a histogram and a bar graph. When is it appropriate to use each one?
What is the minimal level of data students must collect if they want toa. classify subjects?b. add scores together?c. create proportions?d. create ratios?e. subtract scores?f. form averages?
At most universities the faculty are – in ascending seniority – adjunct (i.e., part-time) faculty, lecturers, assistant professors, associate professors, and full professors.a. What level of data
Kevin has collected data about the weight of people in his study. He couldn’t obtain their exact weight, and so he merely asked people to indicate whether they were “skinny” (labeled group 1)
A different researcher wants to count the number of subjects who obtain each score on a variable. What is the lowest level of data that the researcher should collect in order to perform this
Label each of the examples in question 6 (a–o) as continuous or discrete data.Question 6a. Number of Facebook friendsb. Height, measured in centimetersc. Reaction timed. Kelvin temperature scalee.
Classify the following variables into the correct level of data (nominal, ordinal, interval, or ratio):a. Number of Facebook friendsb. Height, measured in centimetersc. Reaction timed. Kelvin
Knowing that it is only possible to convert data down to simpler levels, what would you suggest to researchers who want their data to be as flexible as possible?
A researcher wishes to add together the scores from different subjects. Which level(s) of data should the researcher collect in order to perform this mathematical function?
Explain why most researchers do not actually measure the phenomena they are interested in, but rather choose variables that they believe are related to the phenomena of interest.
Explain why scores on many tests and surveys can be ordinal, interval, or ratio data.
A family science professor wants to study the impact of frequent quizzes on her students’ study habits. In one of her classes she does not offer quizzes. In another class, she offers a quiz once
A political science student is interested in the votes that legislators in different countries cast when considering different bills. The student decides that it is impractical to study every vote by
Some cultural anthropologists study “rites of passage,” which are certain rituals where people transition from one stage of their life to another. The idea of “rites of passage” is very broad
Teresa wants to know if people who post more messages about themselves on social media are more selfish than people who do not.a. She decides to count the number of Facebook status updates that her
A social worker wants to study the impact of the instability of a child’s home life on the child’s academic performance. She defines “instability” as the number of homes that the child lives
A researcher wishes to study stress, and so she records the heart rate of each of her subjects as they are exposed to a distressful situation. Is “heart rate” an independent or dependent
What would be an example of a theory in your major? Can you give an example of how that theory has given rise to a theoretical model? What would be a possible situation that would disprove the theory?
Carl believes in the power of magnets in relieving physical pain, and he wears magnets on his body for this purpose. However, his magnetic bracelet doesn’t help with his arthritis pain. He
What are the four main ways that social science practitioners use statistics in their work?
Explain:a. Why every model is wrong in some way.b. Why practitioners and researchers in the social sciences should use models if they are all wrong.c. How researchers and practitioners judge whether
What is a model? How does the scientific usage of the word “model” differ from the everyday definition of a model? How is it similar?
What trait do theoretical models, statistical models, and visual models all have in common?
What trait do theoretical models, statistical models, and visual models all have in common?
Why is it important to have the ability to independently evaluate researchers’ interpretation of their data?
Why do researchers in the social sciences rarely have data from the entire population of subjects that they are interested in?

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