Data Analysis and Interpretation
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Data Analysis and Interpretation starts at 7 and continues till grade 12.
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See sample questions for grade 12
A data set has a mean of 20 and a standard deviation of 0. What does this indicate about the data?
A scientist wants to determine if fertilizer affects plant growth. She measures the height of plants with and without fertilizer. What is the independent variable?
A student finds that the correlation coefficient (r) between two variables is 0.95. What does this indicate about the relationship between the variables?
Describe one reason why outliers should be carefully considered when analyzing biological data.
A biologist collects the following data on the number of seeds germinated: 8, 10, 9, 7, 6. Calculate the range of the data.
A data set contains the following values: 2, 4, 4, 4, 5, 7, 9. What is the mode?
A data set has a mean of 20 and a standard deviation of 0. What does this indicate about the data?
A researcher collects data on the number of bacteria colonies on different agar plates: 12, 15, 14, 13, 16. What is the mean number of colonies?
If a data set is skewed to the right, which measure of central tendency is likely to be the largest? (1) Mean, (2) Median, (3) Mode, (4) Range
What is the primary purpose of using a control group in a biological experiment? (1) To increase the sample size, (2) To provide a baseline for comparison, (3) To introduce bias, (4) To ensure randomization
Which of the following best describes a dependent variable? (1) The variable that is changed by the experimenter, (2) The variable that is measured in response to changes, (3) The variable that remains constant, (4) The variable that is not recorded
Which of the following best describes a negative correlation? (1) As one variable increases, the other increases, (2) As one variable increases, the other decreases, (3) Both variables increase, (4) There is no relationship
Fill in the blank: A ________ graph is best used to show the relationship between two continuous variables.
Fill in the blank: A ________ is a graphical representation of the distribution of numerical data, often using bars to show frequency.
Fill in the blank: The ________ hypothesis is accepted if the p-value is greater than the significance level.
Fill in the blank: The ________ is the difference between the highest and lowest values in a data set.
A researcher finds a p-value of 0.03 when comparing two groups. Is this result statistically significant at the 0.05 level? (Yes/No)
True or False: A bar graph is suitable for displaying categorical data.
True or False: A larger sample size generally increases the reliability of experimental results.
True or False: Correlation between two variables always means that one variable causes the other.
