Which type of graph shows daily high and low temperatures over a week?

Which type of graph shows daily high and low temperatures over a week?

• A. Line graph
• B. Pie chart
• C. Bar graph
• D. Scatter plot

Answer: (A)

Showing how temperatures change over several days is a time-series task. A line graph is best for this because you lay out days along the horizontal axis and temperature on the vertical axis, then plot points for the daily highs and lows and connect them with lines. This makes trends easy to see—the highs rising or falling over the week and how the lows track alongside them—and you can compare the high and low temperatures at a glance by using two lines. A pie chart isn’t suited here because it shows parts of a whole, not changes over time. A bar graph could display daily values, but it’s harder to spot smooth trends over multiple days, especially if you’re displaying both high and low. A scatter plot focuses on relationships between two variables and isn’t designed to show a sequence of days or continuous time trends as clearly.

Showing how temperatures change over several days is a time-series task. A line graph is best for this because you lay out days along the horizontal axis and temperature on the vertical axis, then plot points for the daily highs and lows and connect them with lines. This makes trends easy to see—the highs rising or falling over the week and how the lows track alongside them—and you can compare the high and low temperatures at a glance by using two lines.

A pie chart isn’t suited here because it shows parts of a whole, not changes over time. A bar graph could display daily values, but it’s harder to spot smooth trends over multiple days, especially if you’re displaying both high and low. A scatter plot focuses on relationships between two variables and isn’t designed to show a sequence of days or continuous time trends as clearly.