#1
What type of graph is best suited for showing the relationship between two continuous variables?
Bar graph
Line graph
Pie chart
Scatter plot
#2
Which statistical measure describes the central tendency of a dataset?
Standard deviation
Variance
Mean
Median
#3
In a scientific experiment, what does the term 'control group' refer to?
The group receiving the experimental treatment
A group that is not exposed to the independent variable
The group with the highest variability
A group with placebo treatment
#4
Which type of graph is suitable for comparing the distribution of a categorical variable across different groups?
Line graph
Bar chart
Histogram
Box plot
#5
What is the primary purpose of a box plot?
To show the distribution of a continuous variable
To compare means of different groups
To display correlation between two variables
To visualize time-series data
#6
What is the purpose of error bars in a scientific graph?
To indicate the range of values in the dataset
To display the standard deviation
To show the margin of error in the data
To mark significant data points
#7
What does correlation coefficient indicate about the relationship between two variables?
Strength and direction of the relationship
Presence or absence of a relationship
Probability of a relationship
Type of relationship
#8
What does the 'p-value' represent in hypothesis testing?
The size of the sample
The strength of the relationship
The probability of obtaining observed results by chance
The mean of the dataset
#9
When is it appropriate to use a logarithmic scale in a graph?
When the data follows a linear pattern
When there is a wide range of values
When the data is categorical
When there is a single variable
#10
What does the term 'statistically significant' mean?
The result is practically important
The result is due to chance variation
The result is unlikely to have occurred by random chance
The result has a high p-value
#11
Which type of plot is commonly used to visualize the distribution of a single continuous variable?
Histogram
Box plot
Bar chart
Scatter plot
#12
What is the purpose of a trendline in a scatter plot?
To connect data points
To indicate outliers
To show the direction of causality
To visualize the overall trend in the data
#13
Which type of graph is suitable for displaying the distribution of a continuous variable along with its median and quartiles?
Line graph
Histogram
Box plot
Scatter plot
#14
Which type of graph is suitable for showing the relationship between two categorical variables?
Line graph
Histogram
Bar chart
Box plot
#15
Which type of plot is useful for visualizing the relationship between three variables?
Scatter plot
Line graph
Bubble chart
Histogram