10. The data that follow are the square footage (in 1,000 feet squared) of 28 homes. 1.5 2.4 3.6 2.6 1.6 2.4 2.0 3.5 2.5 1.8 2.4 2.5 3.5 4.0 2.6 1.6 2.2 1.8 3.8 2.5 1.5 2.8 1.8 4.5 1.9 1.9 3.1 1.6 The sample mean = 2.50 and the sample standard deviation = 0.8302. The distribution can be written as  X ~ U(1.5, 4.5). What is the 70th percentile of square footage for homes? (Enter an exact number as an integer, fraction, or decimal.) _________ thousand feet squared

The height of bedridden patients is often estimated from the length of the patient's ulna, the distance between the point on the elbow and the prominent bone on the wrist. Eight men over the age of 65 had both their height (in centimeters) and the length of their ulna (in centimeters) measured. The data are given in the table below. Ulna length (cm) 20 23 24 26 27 29 30 31 Height (cm) 160 163 166 168 171 178 182 186 Let x denote a patient's ulna length (in cm) and y denote the patient's height (in cm). Assume that the population distributions for both ulna length and height are approximately normal. The following summary measures were obtained from the data. X = 26.25, ỹ = 171.75, SSxx = 99.5, SSyy= 609.5, SSxy= 238.5 ху We wish to find the least squares regression line for the data in this table using ulna length as an independent variable and height as a dependent variable. Estimate the y-intercept of the least squares regression line. Enter your answer using three decimal places.

When creating the dot plot, how are multiple data points for a single score displayed? a. A larger size dot is used; the size of the dot is directly proportional to the number of data points. b. More than one dot is used; dots are placed side by side creating a wider interval. c. A dot plot is innappropriate when multiple data points exist for a single score. d. Multiple dots, representing each data point, are replaced on top of one another.

2. A researcher measures the relationship between education (in years) and investment gains (in thousands of dollars). Answer the following questions based on the results provided. SP = 16.25. a. Create a scatter plot of the data b. Calculater and r2 c. Report results in APA style. d. What do results mean? Education Investment Gains 14 8 12 11 6. 10 18 14

With this chart, what would be the most appropriate scatter plot from these choices?

Twenty salesmen were asked how many phone calls they made on a givan day. The data was ecorded in the table balow. Construct a dot plot for the sat. 15 12 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 34 5

Charlotte-Mecklenburg Schools Math 1. Unit 4. Lesson 7 Student 3. Plots of the residuals for four different models of the same data set are displayed. Which of the following plots fit the data best? a. 1 2 3 2 1 3+ 1 2 3 4 5 6 7 8 9 10 b. 3 2 1 1 2 3 + ● 1 2 3 4 5 6 7 8 9 10 C. 4 3 2 1 1 2 3 4 ● 1 2 3 4 5 6 7 8 0 10 d. 3- 2 1 N 2. 3+ 1 2 3 4 5 6 7 8 9 10

Construct a dotplot for the given data. 1.2, 1.0, 0.8, 0.9, 0.8. 0.8, 1.1, 1.0, 2.1, 1.3, 0.9, 0.8, 0.8, 0.9, 0.9 L USE SALT 00.5 1.0 1.5 2.0 2.5 1.0 1.5 2.0 005 2.5 00.5 1.0 1.5 2.0 2.5 00.5 1.0 1.5 2.0 2.5 Describe the shape of the distribution and look for any outliers. O The data is skewed left with one unusually small outlier. O The data is skewed left with no obvious outliers. O The data is skewed right with one unusually large outlier O The data is mound shaped with no obvious outliers. O The data is mound shaped with one unusually smal and one unu usually large outlien

Using the following stem & leaf plot, find the five number summary for the data. View in full window so that you have 6 rows of data. 1 02 2 m 34459 4 2279 5 0 4 5 6 8 9 6 08 Min = Q₁² Med = Q3 Max = ▬▬▬▬

A comparative Psychologist tests the amount of time it takes for mice to complete a maze as their dependent variable.  What type of data would this be? a. ratio b. interval c. ordinal d. nominal