1 In a bar chart, what does the height of each bar represent? A The category label B The frequency or value for that category C The total number of categories D The average of all values
2 Which of the following is an application of biostatistics in biological research? A Measuring the rate of photosynthesis in plants B Analyzing the results of a clinical trial C Observing the behavior of animals in the wild D Classifying organisms into taxonomic groups
3 For a data set of plant heights, which measure of central tendency would be most appropriate if the data contains outliers? A Mean B Median C Mode D Variance
4 In biostatistics, data collection is important because: A It provides the raw information for analysis B It helps in drawing bar charts C It calculates the mean D It determines the mode
5 Biostatistics is important in biology because it helps to: A Collect and analyze data B Draw conclusions from data C Make informed decisions D All of the above
6 In a bar chart showing the number of students with different blood groups, what does the x-axis typically represent? A Frequency B Blood groups C Percentage D Mean
7 Which graph is best for showing the frequency of discrete categories? A Line graph B Pie chart C Bar chart D Scatter plot
8 Which of the following is an example of discrete biological data? A Height of students B Weight of students C Number of petals on a flower D Blood pressure
9 What does biostatistics primarily deal with? A The study of living organisms in their natural environment B The application of statistical methods to biological data C The classification of organisms based on evolutionary relationships D The chemical processes within and related to living organisms
10 Which measure of central tendency is most affected by extreme values? A Mean B Median C Mode D Range
12 Why is biostatistics important in biological research? A It helps to collect data B It helps to analyze and interpret data C It helps to draw charts D All of the above
13 In a bar chart representing the number of different species in a habitat, what does the height of each bar indicate? A The total number of species in the habitat B The frequency or count for that species C The average number of species per habitat D The median number of species
14 A bar chart shows the number of students who prefer different fruits. The bar for mango is tallest. This means: A Mango is the least preferred fruit B Mango is the most preferred fruit C Mango is the average fruit D Mango is the median fruit
17 Which of the following data sets has a mean of 5? A 2, 4, 6, 8 B 1, 2, 3, 4, 5 C 3, 3, 5, 5 D 4, 5, 6, 7
18 In biological research, the mean is often used to: A Represent the average value of a sample B Show the most frequent value C Show the middle value D Show the spread of data
20 In a bar chart, the height of each bar represents: A The category name B The frequency or value C The median D The mean
21 In a biology experiment, the number of leaves on 5 plants are 4, 6, 8, 6, and 10. What is the median number of leaves? A 4 B 6 C 8 D 10
22 The sum of all values divided by the number of values is called the: A Median B Mode C Mean D Range
23 When is the median a better measure of central tendency than the mean? A When data is normally distributed B When data has no outliers C When data has extreme values D When data is categorical
25 A bar chart is most useful for: A Showing trends over time B Comparing quantities of different categories C Showing parts of a whole D Showing correlation between variables