Question

science exercises graphing & data tables.pdf

part 3: calculation practice (mean, median, mode)

use this data set:
hours spent reading each day: 2, 1, 3, 2, 4

1. list the numbers in order from smallest to largest.
2. calculate the mean.
3. find the median.
4. find the mode.

part 4: short answer (5 questions)

answer each question briefly.

1. what are two main purposes of a data table?
2. what information must a good graph title include?
3. what is a data trend?
4. what is the difference between a linear and nonlinear graph?
5. why do we use a best-fit line on a graph?

part 5: application & analysis (2 scenarios)

scenario 1

data table: time spent running (minutes) & heart rate (beats per minute)

time running (min): 5, 10, 15, 20
heart rate (bpm): 70, 82, 95, 108

1. name the independent variable.
2. name the dependent variable.
3. if you make a graph for this data, which variable goes on the x-axis?

Explanation:

Part 3: Calculation Practice

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Part 4: Short Answer

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Part 5: Application & Analysis (Scenario 1)

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Answer:

Part 3: Calculation Practice (Mean, Median, Mode)

1. Ordered data: 1, 2, 2, 3, 4
2. Mean: 2.4
3. Median: 2
4. Mode: 2

Part 4: Short Answer (5 Questions)

1. Two main purposes of a data table are to organize collected data systematically and to make it easy to read and compare values.
2. A good graph title must include both the independent variable and the dependent variable (typically written as "The Effect of [Independent Variable] on [Dependent Variable]").
3. A data trend is the general pattern or direction in which data points move (such as increasing, decreasing, or staying constant).
4. A linear graph shows a relationship that forms a straight line, whereas a nonlinear graph shows a relationship that forms a curve.
5. We use a best-fit line to reveal the overall trend of the data points and to make predictions for values not directly measured.

Part 5: Application & Analysis (Scenario 1)

1. Independent variable: Time running (min)
2. Dependent variable: Heart rate (bpm)
3. Variable on the X-axis: Time running (min)