The female students in an undergraduate engineering core course at ASU self-reported their heights to the nearest inch. The data
are below. Construct a histogram for the female student height data. Use 10 bins. 63 62 65 65 66 69 64 68 69 68 66 61 70 65 65 68 65 67 64 70 64 64 68 69 68 67 67 63 69 62 64 70 63 64 65 65 70
1 answer:
Answer:
The histogram is presented in the second attached image to this solution.
Step-by-step explanation:
Histogram is a representation that uses bars to represent numerical distribution. It is similar to the bar chart but it is the histogram's area that corresponds to the frequency of the distribution instead of just the heights of the bars.
In constructing a histogram, we first divide the entire range of values into a series of intervals (called bins) and then count how many values fall into each interval, that is, the frequench of the variables in each range of values.
This question asks us to use 10 bins for this question.
The table of range of variables and frequencies used in the plotting of the histogram is presented in the first attached image to this solution and the histogram is presented in the second attached image to this solution.
Hope this Helps!!!
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Answer:
Step-by-step explanation:
Hello!
Given the variables:
X₁: Median Age
X₂: Median Income
b) Considering it from a logical point of view, income changes with age, for example, the more experienced the worker is you would think he would get a better paying job than a younger worker who is just starting. Then the dependent variable will be the median income and the independent variable will be the median age.
a) and c)
To see if there is a linear regression between the median income and median age you have to conduct a hypothesis test for the slope. If the slope is equal to zero, there is no linear regression between the two variables, if it is different to zero, there is a regression between the two of them:
H₀: β=0
H₁: β≠0
α: 0.05
The estimated regression equation for this regression ^Yi= 20.01 + 0.50X
The standard deviation for the slope is Sb= 0.11
And the p-value for the test is 0.0022
The p-value is less than the level of significance I choose, so the decision is to reject the null hypothesis. You can conclude that there is a linear regression between these two variables.
The correlation coefficient between the median income and the median age is r= 0.87 ⇒ This means you could expect a positive and strong linear correlation between the two variables.
d)
The slope represents how much the variable Y is modified whenever the variable X increases one unit.
In this example: Is the modification of the population mean of the median income, when the median age increases one year.
