Question

lesson 1 choosing an appropriate data display guided practice 1. a student is measuring the height of a plant she is growing for a science experiment. her data is shown to the right. a which type of data display is best for this type of information? justify your answer. b create the display, labeling all parts. step 1 determine which type of data display to use. refer to the list on the first page of this lesson. write your choice on the line below. why did you choose that type of display? step 2 use the frame below to create the graph. be sure to label the horizontal axis, the vertical axis, and give your graph an appropriate title. table: week (1,2,3,4,5,6,7,8,9,10) and plant height (cm: 1.6, 2.6, 3.1, 3.4, 4.0, 4.3, 4.7, 5.1, 5.2, 5.2)

Explanation:

Part (a)

To determine the best data display, we analyze the data: it shows plant height over successive weeks (time). A line graph is ideal for showing how a variable (plant height) changes over time, as it can clearly illustrate trends and patterns in the data's progression.

Step 1: Set Up Axes

• Horizontal Axis (x - axis): Label it "Week" and mark the weeks from 1 to 10 (since we have data for weeks 1–10).
• Vertical Axis (y - axis): Label it "Plant Height (cm)". Determine a scale: the minimum height is 1.6 cm, maximum is 5.2 cm. A scale with intervals of 0.5 cm or 1 cm works. Let's use intervals of 1 cm (from 0 to 6 cm to cover the range).

Step 2: Plot Data Points

For each week, plot the corresponding plant height:

• Week 1: (1, 1.6)
• Week 2: (2, 2.6)
• Week 3: (3, 3.1)
• Week 4: (4, 3.4)
• Week 5: (5, 4.0)
• Week 6: (6, 4.3)
• Week 7: (7, 4.7)
• Week 8: (8, 5.1)
• Week 9: (9, 5.2)
• Week 10: (10, 5.2)

Step 3: Connect Points and Add Title

• Connect the plotted points with straight line segments.
• Title the graph: "Plant Height Over 10 Weeks"

(Note: Since this is a text - based response, we can describe the graph. If drawing, the x - axis has "Week" with ticks at 1–10, y - axis has "Plant Height (cm)" with ticks at 0,1,2,3,4,5,6. Points are plotted as above and connected.)

Answer:

A line graph is best. Justification: The data tracks plant height over time (weeks), and a line graph effectively displays how a variable changes over a continuous or sequential interval (like time), showing trends in the plant's growth.

Part (b)