Nursing Preparation Study Guide

Nursing Preparation Study Guide There are two things which can be found in a pie chart that is percentages and area. It can be interpreted from the pie chart given above that the maximum proportion of student uses bus, followed by walking; car and least proportion make use of bicycle for commuting to school. Further, we can also find the number of students, since percentages are given to us. In this case, we know the sum total of the pie is 200. Thus, the number of students commute through bus is 44%, that is 44/100*200 = 88 out of 200 students make use bus. Similarly, we can find the other figures. It should be noted that the data represented by individual pie slices should be mutually exclusive and should not overlap each other. 4.1.7 Scatterplots Use specific points on a data set to mark specific coordinates or frequencies. However, unlike the line plot, the points are not connected. The independent variable is on the x-axis (or horizontal). The independent variable can be controlled or manipulated. In this case, the independent variable is the quality of the peanut butter. The dependent variable is the variable in the regression that cannot be controlled or manipulated, which is on the y- axis or vertical. In this case, it is the price of the peanut butter. 4.2 Numerical Summaries 4.2.1 Mean The most general definition of mean is the calculated average of the given population or set of values. The mean or average can yield useful information about a population or given data set. From this calculation we can determine the average age or average response. The formula for calculating the mean is: Mean = ℎ Bus 44% Walkin g 36% Car 15% Bicycle 5%

©2018

Achieve Test Prep

Page 66

of 173