Match the terms to the statement below.

Use the image below to match the terms with the correct location. nervous 2.jpg

Look at the plot below showing the distribution of hours_studied. Among the values listed, the highest density (concentration of values) occurs at approximately Among the values listed, the lowest density (concentration of values) occurs at approximately  

Use the univ data frame that you have downloaded and read in to your R environment. The questions below are numbered A, and B, Please use those letters in your answers. That is Write A and start the answer for that question on the following line, and so on. Write R code to build a model with score as the response variable and hours_studied as the explanatory variable and to print the variances of the response variable and model values (4 points) What proportion of the variability in the response variable does the model explain? (2 points)

Use the “univ” data frame that you created based on the instructions. The function to compute the maximum is max and to compute the minimum is min. Write R code to compute the maximum score and minimum gpa. Your code should not list the entire dataset. It should just compute what we need. Name the columns as max_score and min_gpa and show the max score first and then min gpa.  

The figure below shows ten rows from a data frame with more than 500 rows. Select all options that represent variables in the data frame. Remember, you must select al correct options. No partial cresit will be awarded. You get points only if you select all correct options and do not select any of the incorrect options. date       pce    pop psavert uempmed unemploy                  1 1967-07-01  507. 198712    12.6     4.5     2944 2 1967-08-01  510. 198911    12.6     4.7     2945 3 1967-09-01  516. 199113    11.9     4.6     2958 4 1967-10-01  512. 199311    12.9     4.9     3143 5 1967-11-01  517. 199498    12.8     4.7     3066 6 1967-12-01  525. 199657    11.8     4.8     3018 7 1968-01-01  531. 199808    11.7     5.1     2878 8 1968-02-01  534. 199920    12.3     4.5     3001 9 1968-03-01  544. 200056    11.7     4.1     287710 1968-04-01  544  200208    12.3     4.6     2709

15. Convert 7.50 × 10³ seconds into hours.

1. Why is the SI system of units preferred in science?

3. Why are noble gases chemically unreactive?

13. A student measures 22.4 mL, 22.5 mL, and 22.6 mL for a true value of 23.5 mL. What does this show?