Explain the meaning of an element, a variable, an observation, and a data set.

Please complete the following question. Make sure you are responding to all parts of the question.    The number of awards earned by students at one high school is recorded. Predictors of the number of awards earned include the type of program in which the student was enrolled (e.g., vocational, general or academic) and the score on their final exam in math. Variables Participant number (ID) Number of awards Program type (vocational - 1; general - 2; academic - 3 Math Score   id    num_awards    prog    math 45    1    3    41 108    1    1    41 15    1    3    44 67    1    3    42 153    1    3    40 51    1    1    42 164    1    3    46 133    1    3    40 2    1    3    33 53    1    3    46 1    1    3    40 128    0    2    38 16    1    3    44 106    1    3    37 89    1    3    40 134    1    1    39 19    1    1    43 145    0    3    38 11    1    2    45 117    0    3    39 109    1    1    42 12    1    3    45 37    1    3    40 69    0    3    40 43    1    2    43…

Given the data set A = {0, 0, 12, 13, 14, 15, 16, 18, 22, 25, 30} which of the following is a true statement? O There are two modes for the data set. O The mean is greater than the median. O The mean and the median have the same value. O There is no mode for the data.

R Studio       library(poliscidata)       2. (Dataset: nes. Variables: dhsinvolv_message, polknow_combined.) Online political activism is a relatively new phenomenon. In recent years, online social networks like Facebook and Twitter have become part of our everyday experiences and, for many people, a forum for political news and debate. From your own personal experiences, you may have some impressions about who is likely to post political messages online, but our personal perspectives are bound to be limited and incomplete. Let's use the nes dataset to gain a better understanding of who uses social media to promote political ideas. Survey participants were asked whether they had posted a political message on Facebook or Twitter in the last 4 years and the dhsinvolv_message variable recorded their responses.        1. According to the nes dataset, roughly 20% of respondents indicated that they had posted a social media message about politics in the past 4 years. If the probability of an…

A social media app is conducting a study on the amount of time users spend on the app. They collect the following variables. Age Years: How old they are in years? Income: Monthly Income Location: What country do they live in? Device: Do they use an iPhone, Samsung, other? Service: Who provides their mobile phone service? For example: T-Mobile, At&t, Verizon, ect Hours: How many hours do they spend on the app per week. A) Which variable could the research construct a one proportion z-interval for? B) The social media app just launched a new algorithm that suggest content in an effort to increase the amount of time the user spends on the app. The researchers want to use the survey results to see if there is statistically significant evidence that on average users spend more than 10 hours per week on the social media app. The researchers found in their sample of 44 users, the mean hours spent on the app is 10.5 hours with a standard deviation of 5.675 hours. Which type of hypothesis test…

How Panel Data is useful to control some types of omitted variables without actually oberving them?

website monitors customer complaints and organizes these complaints into six distinct categories. Overthe past year, the company has received 534 complaints One possible graphical method for representing these data is a scatter plot. A. TRUE B. FALSE

does the interquartile range of a data set affect the way the data is graphed?