AR
It is used to design and apply engineering principles to solve problems in medicine and biology and healthcare
BIOMEDICAL ENGINEERING
_________________ data describes characteristics or categories while ___________________ data involves numbers and measurements.
Qualitative; Quantitative
What type of variable relationship exists in this experiment?
Magic Milk:
The higher the amount of dishwashing liquid, the lower the surface tension of the milk.
Negative Relationship
What are the three measures of central tendency?
Mean, Median and Mode
What type of variable relationship exists in this experiment?
Effect of Water Temperature on the Rate of Sugar Dissolution:
The greater the number of sugar particles, the slower the rate of dissolving.
Negative Relationship
Use small electric pulses to keep the heartbeat rhythm consistent
XRAY
DEFIBRILLATOR
PACEMAKER
2D ECHO
PACEMAKER
Magic Color-Changing Potion
Investigate how acids (vinegar) and bases (baking soda) interact with pH-sensitive compounds (anthocyanin in red cabbage)
What is the Independent Variable?
Acids (vinegar) and Bases (baking soda)
Using the random number table, look for the first five (5) randomized samples with serial code ranging from 3000-7000 from A1 (going down)
A B C D E
1 49563 12872 14063 18048 25005
2 64208 48237 41701 73117 33242
3 83049 21933 92813 04763 51486
4 72875 38605 29341 80749 80151
4208,3049,4063,3117, 4763
Effect of Water Temperature on the Rate of Sugar Dissolution: Determine the effect of cold, warm and hot on the rate of dissolving the sugar
What is the Dependent Variable?
Rate of Dissolving the Sugar
Which is NOT a measure of Variability
Variance
Range
Median
Interquartile Range
Median - Middle Value (central tendency)
It is an engineering prioritizes sustainability, efficiency, and environmental stewardship, incorporating developments such as green chemistry, nanotechnology, and biobased materials.
CHEMICAL ENGINEERING
Identify the Basic Principle of ERD:
Problem Scenario: Effect of Study Music on Students’ Test Performance
A team of educational researchers wants to find out whether listening to instrumental music while studying improves science test scores of Grade 10 students.
The researchers select 40 Grade 10 students from the same school who have similar academic backgrounds and are enrolled in the same science subject.
Homogeneity
What inferential statistical treatment is used to compare or determine the significance of several statistical measures (N > 30): The national mean systolic blood pressure is known to be 120 mmHg with a known population standard deviation of 10 mmHg.
A researcher collects blood pressure readings from 100 adults in a coastal community and finds a sample mean of 123 mmHg.
Z-test
Student Sleep Hours
Researchers want to study how many hours high school students sleep each night. They survey 20 students and collect the following data (hours):
6, 7, 7, 8, 5, 7, 6, 8, 9, 10, 7, 6, 8, 5, 7, 6, 7, 6, 8, 7
Find the mean.
The Power of CO₂: Inflating Balloons Without Air is a result of how carbon dioxide gas is made when baking soda reacts with vinegar, causing the balloon to inflate.
What is the Control Variable?
Balloon Size, Brand Type of Vinegar, Brand Type of Baking Soda
Which describe the design and processes which remove CO₂ from industrial emissions?
Sustainability & Green Chemistry
Decarbonization, Carbon Capture, Utilization, and Storage
Hydrogen Economy
Advanced Materials & Nanotechnology
Decarbonization, Carbon Capture, Utilization, and Storage
This summarize of describe the features of a data set, such as its central tendency or dispersion.
Descriptive Statistics
Identify the type of experimental design used:
Problem Scenario: Effect of Different Fertilizers on Tomato Plant Growth
Agricultural researchers want to determine whether three different types of fertilizer affect the height of tomato plants. The researchers randomly assign the 24 plants to the three treatments, with 8 plants per treatment, using a random number generator.
Complete Randomized Design (CRD)
What inferential statistical treatment is used to measures how a model compares to actual observed data: A hospital expects blood types to follow the national distribution:
A: 40%
B: 30%
AB: 10%
O: 20%
A random sample of 150 donors is collected.
Chi-square Goodness of Fit Test
Blood Pressure Readings
A health researcher measures the systolic blood pressure of 6 adults in a community (mmHg):
120, 122, 125, 130, 128, 126
What is the mean and median?
Mean: 120+122+125+126+128+130 = 751/6 = 125.166 or125.17
Median: 125+126 = 155/2 = 125.5
Identify the Basic Principle of ERD:
Problem Scenario: Effect of Organic Fertilizer on Plant Growth
A group of researchers wants to determine whether an organic fertilizer increases the height of mung bean plants compared to plants grown without fertilizer.
Control and Experimental Group
Problem Scenario: Relationship Between Study Hours and Test Rank
A researcher wants to examine whether there is a relationship between the number of hours students study per week and their rank in a mathematics test.
The researcher collects data from 5 students:
Student Study Hours per Week Test Rank
1 10 3
2 12 1
3 8 5
4 6 9
5 7 7
Rank A Rank B d d2
2 4 -2 4
1 5 -4 16
3 3 0 0
5 1 4 16
4 2 2 4 = Ed2 = 40
Spearman rho = 1-(240/120) = 1-2 = -1 negative perfect correlation
Problem Scenario: Analyzing Reaction Time in a Cognitive Science Experiment
A group of cognitive science researchers is studying the reaction time of participants when responding to a visual stimulus. Reaction time is measured in milliseconds (ms).
The researchers test 5 participants and record the following reaction times:
Reaction Times (ms):
215, 220, 225, 230, 230
Identify the median and mode
Mode: 230
Daily Step Count
A fitness study records the number of steps taken in a day by 7 participants:
5000, 7500, 8000, 7500, 9000, 8000, 8500
Find the Interquartile Range:
Array: 5000 7500 7500 8000 8000 8500 9000
Q2 Median: 8000Lower half: 5000,7500,7500
Upper half: 8000,8500,9000
Q1: 7500
Q3: 8500
IQR = 8500-7500=1000
Identify the type of experimental design used:
Problem Scenario: Effect of Fertilizer Type on Rice Yield Across Different Field Areas
Agricultural researchers want to determine whether three types of fertilizer affect the rice yield. The researchers suspect that soil fertility varies across different parts of the field, which may influence plant growth. To control this source of variation, the field is divided into four blocks based on soil fertility level (Block 1 to Block 4). Each block contains plots with similar soil characteristics.
Apply all three treatments once in each block.
Randomly assign the three treatments to plots within each block.
Measure the rice yield (kg per plot) after the growing season.
Randomized Complete Block Design (RCBD)