It is recommended you receive the rubella vaccination at least one month before trying to become pregnant. TDapâthe TDap vaccine protects against tetanus, diphtheria, and whooping cough (pertussis). This vaccine can be used either before pregnancy or after the 20th week of pregnancy.
Ogive. An Ogive (pronounced O-Jive) is a graph that represents the cumulative frequencies for the classes in a frequency distribution and it is a continuous frequency curve. Ogive has the shape of an elongated 'S' and is sometimes called a double curve with one portion being concave and the other being convex.
Circle graphs/pie charts versus bar graphs When displaying statistical information, refrain from using more than one circle graph/pie chart for each figure. Figure 6 shows two circle graphs/pie charts side-by-side, where a split bar graph (two bar graphs back-to-back) would have shown the information more clearly. A user might find it difficult to compare a segment from one circle graph/pie chart to the corresponding segment of the other circle graph/pie chart.