B1. (a) The unfinished Histogram and Frequency Table give information about the times, in hours, taken by runners to complete the Maths-town Marathon. Histogram Frequency Table Frequency density Time (t hours) Frequency 2

Step 3 of 5 2/21 Correct Scores on a Test Class Frequency 50-57 14 58-65 66-73 10 74-81 8 82-89 9 Step 3 of 5: Determine the class width of each class. 囲 Tak Answer

Please explain and answer

Mean Temperature (°C) The following scatterplot shows the mean annual carbon dioxide (CO,) in parts per million (ppm) d) What is the meaning of the slope of this equation? measured at the top of a mountain and the mean annual air temperature over both land and sea across the globe, in degrees Celsius (C). Complete parts a through h on the right. O A. For every degree that the mean temperature increases, CO, levels increase by 0.004 ppm. 16.800 O B. For every 0.004 ppm increase in CO, levels, the mean temperature increases by 1°C. 16.725 OC. For every 1 ppm increase in CO, levels, the mean temperature increases by 0.004°C. 16.650 O D. The slope does not have a meaningful interpretation in the context of this problem. 16.575 16.500 e) What is the meaning of the y-intercept of this equation? 337.5 CO, (ppm) 350.03 325.0 362.5 A. For every 1 ppm increase in CO, levels, the mean temperature increases by 0.004°C. Click here to view the regression output. O B. When the CO, level is 0 ppm, the…

When computing descriptive statistics for variables measured on a continuous scale, we run ______________ and the correct type of graph is ____________.   Question 3 options:   means/histogram   tallies/bar chart   mean, median, mode, standard deviation/histogram   bar chart; mean, median, mode, standard deviation   histogram