Data Analysis Skills for Grade 7

What is the first step in collecting data for a survey?

• Select a random sample of participants.

• Create the survey questions without any planning.

• Define the survey objectives and target audience.

• Choose a survey platform to distribute the survey.

How can you represent data visually using a bar chart?

• A bar chart displays data using pie slices to represent proportions.

• A bar chart visually represents data by using rectangular bars to show the values of different categories.

• A bar chart shows data through a series of dots plotted on a grid.

• A bar chart uses lines to connect data points over time.

What type of graph would you use to show the relationship between two variables?

• Bar graph

• Line graph

• Pie chart

• Scatter plot

When analyzing a graph, what does the x-axis typically represent?

• The dependent variable

• The y-axis label

• The scale of measurement

• The independent variable

What is the purpose of a legend in a graph?

• To display the title of the graph.

• To show the source of the data used in the graph.

• To identify and explain the data represented in the graph.

• To provide a decorative element to the graph.

How do you determine the mode of a set of data?

• The mode is the value that appears most frequently in a dataset.

• The mode is the sum of all values divided by the number of values.

• The mode is the middle value when the data is sorted.

• The mode is the average of all values in a dataset.

What is the difference between mean and median?

• The median is the average of all values in a dataset.

• The mean is the middle value, while the median is the average.

• The mean is always greater than the median.

• The mean is the average, while the median is the middle value of a dataset.

How can you compare two sets of data effectively?

• Rely solely on personal opinions to draw conclusions.

• Ignore outliers and focus on average values only.

• Use visual tools and statistical methods to identify and quantify differences.

• Use only one method of analysis without comparison.

What does it mean if a bar in a bar chart is taller than others?

• It means that the category represented by the taller bar has a greater value or frequency than the others.

• It means the bar is incorrectly labeled.

• It shows that the data is not relevant.

• It indicates that the category has the lowest value.

How can you interpret the trends shown in a line graph?

• The color of the line is the most important factor in interpretation.

• Trends in a line graph can be interpreted by analyzing the direction, rate of change, and patterns over time.

• Trends in a line graph are only determined by the highest point.

• Line graphs cannot show changes over time.