e) Below is SPSS output for this study. Using the descriptive statistics, does it appear that caffeine has an effect on reaction time? Which group seemed to have more variability in their reaction time? Explain. Condition Experimental Statistics How fast subjects respond On Missing Median Mode Std. Deviation Variance & Multiple modes exist. The smallest value is shown b. Condition Experimental Mean Condition = Control Statistics How fast subjects respond seconds) Masing 14.500-0 14.5000 Mode Sed. Deviation Variance & Condition Control 10 0 52705 276 10 0 24.1000 24.5000 25.00 1.79196 3.213 at the spss outpu well, from looking the caffeine has more effect on the reaction time compared to water reaction.
e) Below is SPSS output for this study. Using the descriptive statistics, does it appear that caffeine has an effect on reaction time? Which group seemed to have more variability in their reaction time? Explain. Condition Experimental Statistics How fast subjects respond On Missing Median Mode Std. Deviation Variance & Multiple modes exist. The smallest value is shown b. Condition Experimental Mean Condition = Control Statistics How fast subjects respond seconds) Masing 14.500-0 14.5000 Mode Sed. Deviation Variance & Condition Control 10 0 52705 276 10 0 24.1000 24.5000 25.00 1.79196 3.213 at the spss outpu well, from looking the caffeine has more effect on the reaction time compared to water reaction.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
how do you get those answers ? Such as 0.112 and 0.167
Transcribed Image Text:### Analysis of Caffeine's Effect on Reaction Time
**SPSS Analysis Summary:**
From the SPSS output, it appears that caffeine has an effect on reaction time.
- The mean reaction time for the espresso group is **0.673 seconds**.
- The mean reaction time for the water group is **0.803 seconds**.
This indicates that the espresso group had a faster reaction time compared to the water group.
**Standard Deviation:**
- The standard deviation for the espresso group is **0.112 seconds**.
- The standard deviation for the water group is **0.167 seconds**.
This suggests that the reaction times in the water group were more variable than those in the espresso group.
The findings highlight the influence of caffeine on improving reaction time while also indicating a more consistent response in the caffeine group compared to the variability observed in the water group.
Transcribed Image Text:## SPSS Output Analysis for Reaction Time Study
### Research Question:
Using the descriptive statistics, does it appear that caffeine has an effect on reaction time? Which group seemed to have more variability in their reaction time? Explain.
### Statistics for Condition = Experimental
- **N (Valid):** 10
- **N (Missing):** 0
- **Mean:** 14.5
- **Median:** 14.5
- **Mode:** 14.0
- **Standard Deviation:** 0.52705
- **Variance:** 0.278
#### Note:
- Multiple modes exist; the smallest value is shown.
### Statistics for Condition = Control
- **N (Valid):** 10
- **N (Missing):** 0
- **Mean:** 24.1
- **Median:** 24.5
- **Mode:** 25.0
- **Standard Deviation:** 1.79196
- **Variance:** 3.211
### Analysis:
From the SPSS output, it appears that caffeine has an effect on reaction time:
- The **experimental group**, which is assumed to have consumed caffeine, demonstrated a **lower mean reaction time (14.5 seconds)** compared to the **control group** with a mean of **24.1 seconds**.
- **Variability:** The control group showed higher variability in reaction times (Standard Deviation = 1.79196) compared to the experimental group (Standard Deviation = 0.52705), as indicated by the higher variance (3.211) compared to the experimental group’s variance (0.278).
### Conclusion:
**Handwritten Note:** It appears that caffeine has more effect on the reaction time compared to water reaction.
This analysis supports the hypothesis that caffeine reduces reaction time, evidenced by the lower mean and reduced variability in the experimental group.
Expert Solution
Step 1: Write the given information.
| Condition = Experiment | |
| N Valid | 10 |
| Missing | 0 |
| Mean | 14.5 |
| Median | 14.5 |
| Mode | 14 |
| Std. Deviation | 0.52705 |
| Variance | 0.278 |
| Condition = Control | |
| N Valid | 10 |
| Missing | 0 |
| Mean | 24.1 |
| Median | 24.5 |
| Mode | 25 |
| Std. Deviation | 1.79196 |
| Variance | 3.212 |
Step by step
Solved in 4 steps with 2 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman