ou are given the following data, where X1X1 (final percentage in history class) and X2X2 (number of absences) are used to predict YY (standardized history test score in fourth grade): X1X1 X2X2 YY 88 3 375 99 0 485 75 4 370 80 2 420 80 1 390 78 3 350 98 0 480 95 2 415 92 6 375 61 5 310 82 0 400 70 3 350

If the Correlation Coefficient (r) between two variable was calculated to be 0.7898, what percent (%) of the variation of the dependent variable is due to the variation of the independent variable? Group of answer choices 103.1% 33.1% 62.4% 94.0%

Given a data point x, what does the z-score tell us about x?

I need help with these questions. I did part A with the regressional analysis and got 92.5% for the coefficient determination.

Rick took a test that is known to produce normally distributed grades with a mean of 72 and a SD of 10. If Rick know that the portion of scores below his was 0.4443, what was his score on the test? Two decimal places.

I need help with all of them plz.

use the sample data to construct a scatterplot. Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? FORECAST AND ACTUAL TEMPERATURES The table lists actual high temperatures and the high temperatures that were previously forecasted for these same days. The table includes data for ten different days near the author’s home. What does the result suggest about the accuracy of five-day predicted high temperatures?

In a study, the data you collect is faculty rank (instructor, assistant professor, associate professor, full professor).What type of data is this? Qualitative (Categorical) Quantitative - Discrete Quantitative - Continuous

You need to use Stata to look up the dataset and its variables. Use Stata Companion Textbook. (Dataset: NES. Variables: spend8, [pw=nesw].) The NES dataset contains spend8, which records the number of government policy areas where respondents think spending should be increased. Scores range from 0 (the respondent does not want to increase spending on any of the policies) to 8 (the respondent wants to increase spending on all eight policies). The NES, of course, polls a random sample of U.S. adults. In this exercise you will analyze spend8 using the mean and lincom commands. You then will draw inferences about the population mean. (Remember to specify nesw as the probability weight.) The spend8 variable has a sample mean of ______. Make sure you use [pw=nesw] so your results are nationally representative. There is a probability of .95 that spend8’s true population mean falls between a score of ______ at the low end and a score of ______ at the high end. A student researcher…

Part 2 For the following set of scores, compute standard scores (z-scores). Do it using SPSS. Don't forget that the initial output will only show the output window. You will have to switch back to Data View. Scores 18 19 15 20 25 31 17 35 27 22 34 29 40 33 21 Z- Scores