The following scatterplot shows the relationship between the course grade and the placement test score for a random sample of students. 100 90 80 70 60 50 40 30 20 10 20 40 60 80 100 Placement Test Describe the relationship between two variables. (Use one or two sentences). Course Grade

Answer clearly

The scores and the percents of the final grade for a student in a stats class are given. What is the student's mean score? Complete the thirds column

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…

A researcher surveyed 80 patients at a certain hospital. The histogram below gives the length of time patients waited to see a doctor at the hospital. The classes, in minutes, are 0 - 1.9, 2 - 3.9, etc., and the vertical axis represents the number of patients. 25 20 15 10 2 4 8. 10 wait time (minutes) (a) Use the histogram to determine the percent of patients that waited less than 6 minutes to see the doctor. (b) Determine the interval that contains the median wait time. **Include all decimal places** number of patients

Choose the best statement to summarize the association shown between hat size and IQ in the scatterplot below. Hat Size O The scatterplot does not show a trend that would indicate an association between hat size and IQ scores. O As hat size increases, IQ scores tend to decrease. O As hat size increases, IQ scores tend to increase. Hat size causes IQ to increase.

Solve the problem. The following data gives the number of applicants that applied for a job at a given company each month of 1999: 63, 70, 68, 74, 83, 77, 79, 86, 82, 68, 66, 63. What is the median of the data? O 72 O There is no median. O 70 O 74 W ASUS f4 f5 f6 f7 f8 口京 f9 f10 f11 & 4 7 8. 9. R T Y U 因 5 图

Find Q1, the median, Q3, and the IQR for the data shown below. (Exclude the median from the lower half and from the upper half of the data.) 14 17 18 23 24 48 55 56 68 76 88 Q1 Median= Q3 = IQR = %3D

Determine whether the data sets show a direct variation. Number of Baskets NMT 00 2 3 4 8 11 true false Cost $6 $9 $12 $24 $33

The boxplot below shows salaries for Actuaries and CPAS. СРА Actuary + 30 35 40 45 50 55 60 65 70 75 80 Salary (thousands of $) Tiffany makes the median salary for an Actuary. Mariah makes the first quartile salary for a CPA. Who makes more money? Tiffany O Mariah