hello, would you please help me check my answers and solve the other ones I didnt finish to the questions bellow? I really apreciate that! The table in attachment gives the data from historical election percent participation for the 18-24- year-old age group in US presidential elections from 1964 to 2012. For example the point (16, 40) represents the year 1980, x = 16 = 1980 – 1964, which had a participation rate of 40% for the 18-24-year-old age group in US presidential election. Type up your responses to the following 6 parts to this problem. There is no need to type the questions, just your responses, which can include screen shots. Create a scatter plot for the percent of participation of the 18-24-year-old group, y, as a function of years after 1964, x, using Desmos. See the video below for a review of how to create a scatter plot in Desmos.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
hello, would you please help me check my answers and solve the other ones I didnt finish to the questions bellow? I really apreciate that!
The table in attachment gives the data from historical election percent participation for the 18-24- year-old age group in US presidential elections from 1964 to 2012.
For example the point (16, 40) represents the year 1980, x = 16 = 1980 – 1964, which had a participation rate of 40% for the 18-24-year-old age group in US presidential election.
Type up your responses to the following 6 parts to this problem. There is no need to type the questions, just your responses, which can include screen shots.
-
Create a
scatter plot for the percent of participation of the 18-24-year-old group, y, as a function of years after 1964, x, using Desmos. See the video below for a review of how to create a scatter plot in Desmos. -
Create a linear model of the trend for the percent of participation of the 18-24-year-old group, y, as a function of years after 1964, x, using Desmos. Here is a video reviewing how to create a linear model in Desmos . . .
Give your model in slope-intercept form, rounding to one decimal place.
3. Interpret the model describing what the slope and y-intercept mean in this situation, if
anything.
4. Find the participation level for 2020, that is, what the model predicts for x = 56.
5. Research the actual participation level of US adults 18 to 24 years old in 2020 presidential election. Cite where you found your reply for this question.
6. Reflect on why the actual participation level is or is not consistent with the predicted value. Give at least two reasons to back up your opinion.
my answers:
2. Y= -0.2x+47.5
3. Y intercept= (0, 47.5)
Slope= m= -0.2/1, if we increase one year the percentage will decrease 0.2%.
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