Histogram Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Histogram and links to relevant pages within the course.
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| MCV is calculated using which of the following parameters: | View Page |
| Using Frequency Distributions A frequency distribution is a chart that groups data into different classes, and then graphically shows how many data points fall into each class. A frequency distribution allows the reader to see easily the approximate center and spread of the data. Table II shows the frequencies of different hemoglobin concentrations. Figure 2 is a histogram of the data. Table II Frequency distribution of blood hemoglobin levels from healthy women determined on the Coulter Gen S Hemoglobin (gm/dL) Number of Women 6 - 8 1 8 - 10 2 10 - 12 10 12 - 14 25 14 - 16 9 16 - 18 1 Figure 2 Frequency Distribution Blood Hemoglobin Levels from 48 Healthy Women Determined on the Coulter Gen S | View Page |
| Graphing Frequency Distributions Frequency tables are usually converted to graphs since graphical information is easier for people to understand. There are three common types of distributions; the type of data determines which one to use. The three types are: bar chart histogram frequency polygonAn example of each type follows. Notice that in each case, the classes appear on the x-axis, and the frequency of that class is on the y-axis. | View Page |
| Histogram Histograms are used for continuous or discrete data. When continuous data are charted, you can connect the midpoints of the tops of the bars with a dashed line.Figure 4Frequency of Serum Glucose Levels in 130 Hospital Employees | View Page |
| Table V Serum BUN values (mg/dL) from hospital employees at Kettering Medical Center 15.922.59.116.8 6.428.615.223.7 10.317.013.820.5 7.425.04.118.4 12.713.630.921.3 What types of charts are appropriate for illustrating this data? | View Page |
| Suppose you measured the Serum BUN levels in a sample of several healthy people. You found that the average was 19.6 mg/dL and the standard deviation was 6.1 mg/dL. The histogram of the data showed roughly the bell curve shape. What percent of the whole population of healthy people has Serum BUN levels between 13.5 and 25.7 mg/dL? | View Page |
| Histograms Now we'll take the results of the glucose determinations and plot them on an X-Y axis. Ideally, we would see a graph like the one to the right. This is called a histogram--a graph or plot that lets you see how many times a certain event occurred. If we then draw a line following the data results, we would get a curve as shown in our illustration. Note that it has the general shape of a bell. This is known as the Gaussian curve or more popularly as a bell-shaped curve. | View Page |
| A blood smear represented by the photograph was submitted for hematologic review. Based on the erythrocyte morphology and the accompanying histogram, which of the following choices is the most likely situation or condition? | View Page |