BIOSTATISTICS 2026/2027 TEST PAPER QUESTIONS
AND SOLUTIONS RATED A+
✔✔Length of the bar corresponds with the ___________- of the value - ✔✔frequency
✔✔Histogram is like a bar graph but bars ___________ - ✔✔touch
✔✔Histograms are used for interval or ratio ______________ - ✔✔variables
✔✔Frequency polygon is a line graph that represents the _____________ of data that
are continuous in nature. - ✔✔frequency
✔✔Frequency polygon is drawn by connecting the mid points of _____________ of a
histogram - ✔✔Bars
✔✔Polygon is a line graph used to plot a variable over - ✔✔time
✔✔Scattergram shows the relationship between ______ variables - ✔✔2
✔✔Scattergram show how the level of one variable varies as the other variable
___________ - ✔✔changes
✔✔Scattergram is plotted on X and Y axis and expressed as and ___________ value -
✔✔R
✔✔Correlation is a ______________ between variables that can be measured
mathematically. - ✔✔relationship
✔✔Correlation coefficient is used to measure correlation, where R is a number between
_______ and ___________ - ✔✔-1 and 1
✔✔The value of R communicates both _________ & ________ of the association -
✔✔Direction and strength
✔✔Ina positive relationship both variables vary in the ___________ direction - ✔✔same
✔✔In a negative relationship the variables vary in the ___________ direction -
✔✔opposite
✔✔the closer the R value is to 1 or -1 it indicates a ____________ relationship. -
✔✔Stronger
AND SOLUTIONS RATED A+
✔✔Length of the bar corresponds with the ___________- of the value - ✔✔frequency
✔✔Histogram is like a bar graph but bars ___________ - ✔✔touch
✔✔Histograms are used for interval or ratio ______________ - ✔✔variables
✔✔Frequency polygon is a line graph that represents the _____________ of data that
are continuous in nature. - ✔✔frequency
✔✔Frequency polygon is drawn by connecting the mid points of _____________ of a
histogram - ✔✔Bars
✔✔Polygon is a line graph used to plot a variable over - ✔✔time
✔✔Scattergram shows the relationship between ______ variables - ✔✔2
✔✔Scattergram show how the level of one variable varies as the other variable
___________ - ✔✔changes
✔✔Scattergram is plotted on X and Y axis and expressed as and ___________ value -
✔✔R
✔✔Correlation is a ______________ between variables that can be measured
mathematically. - ✔✔relationship
✔✔Correlation coefficient is used to measure correlation, where R is a number between
_______ and ___________ - ✔✔-1 and 1
✔✔The value of R communicates both _________ & ________ of the association -
✔✔Direction and strength
✔✔Ina positive relationship both variables vary in the ___________ direction - ✔✔same
✔✔In a negative relationship the variables vary in the ___________ direction -
✔✔opposite
✔✔the closer the R value is to 1 or -1 it indicates a ____________ relationship. -
✔✔Stronger
