Nobody downloaded yet

Lab Report 2: On the Significance of Correlation - Essay Example

Comments (0) Cite this document
The most widely used method of calculating the strength of the correlation between two sets of variables is Pearson’s product-moment correlation coefficient which is designated as r and…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER96.9% of users find it useful
Lab Report 2: On the Significance of Correlation
Read TextPreview

Extract of sample "Lab Report 2: On the Significance of Correlation"

Download file to see previous pages If r = - 0.5, or r = + 0.05 then there is a moderately negative or a moderately positive association between both sets of variables. The closer r is to +1 and -1 the stronger the level of association while the closer r is to 0 the weaker the level of association. A value of r = 0 indicates that there is no association between the independent and the dependent variables. In order to determine the statistical significance of a correlation result the p-value which represents the probability is compared with the significance level. If the p-value is less than the significance level then the null hypothesis: r = 0 is rejected and the alternative hypothesis: r ≠ 0 is accepted. On the other hand if the p-value is greater than the significance level then the null hypothesis: r = 0 is accepted and the alternative hypothesis: r ≠ 0 is rejected.
The SPSS Manual which is written by Julie Pallant provides several examples of how the SPSS software can be used to perform correlation analysis. The data set that I have chosen to perform my analysis on is Sleep4ED. This dataset represents a survey of 271 subjects with ages from 18 to 84 years of age and consisting of both male and female. The survey questions related to sleep behavior patterns, gender, weight, and height. The correlations of the variables in the dataset were found to be significantly correlated in some cases with varying levels of correlation.
The variables – gender and fall asleep while driving found to be statistically significant but were spurious correlations since they have no meaning. Having recoded the variable gender using 0 to represent females and 1 to represent males and ‘fall asleep while driving using a 1 for yes and a 2 for no n response to the question – ‘Have you ever fallen asleep while driving?’ the results are represented in Table 1.
Table 1 indicates that there is a statistical significant correlation ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Lab Report 2: On the Significance of Correlation Essay”, n.d.)
Lab Report 2: On the Significance of Correlation Essay. Retrieved from
(Lab Report 2: On the Significance of Correlation Essay)
Lab Report 2: On the Significance of Correlation Essay.
“Lab Report 2: On the Significance of Correlation Essay”, n.d.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Lab Report 2: On the Significance of Correlation

Lab 2 (McNamara, 1991). The last action that was carried out was t compare the trials were gestalt was and was not presented. It should be noted that the whole process was computerized such that detection of any change could be tracked to detect the stimuli affected. The analysis of variance was then used to analyze the findings (Coren & Girgus 1980). Results The results were as shown below Based on the 2 X 5 Repeated measures ANOVA, it was found that the main effect of gestalt presence F (1, 32) = 15.637, p < .001. On the other hand, the main effect of stimuli change F (4,128) = 45.358, p < .001. By combining and correlating the two, it was found that the significant interaction between...
3 Pages(750 words)Lab Report

Experiment 2 Resonant circuit

...electrode that is equal and opposite to the accumulated negative charge on the other. Thus the charge on the electrodes is equal to the integral of the current as well as proportional to the voltage, as discussed above. As with any antderivative, a constant of integration is added to represent the initial voltage V (t0) (Hammond). This is the integral form of the capacitor equation: Q= CV ………………………………………………………… 1 V (t) = Q (t) /C …………………………………………………… 2 Taking the derivative of this and multiplying by C yields the derivative form: I(t) = dQ(t)/dt = CdV(t)/dt ………………………………………………3 The experiment however has a number of sources of errors which actually hinders that achievement of the most accurate results. These errors and...
4 Pages(1000 words)Lab Report

Soc crtq 2

...Article Critique WHO RULES AMERICA By G. William Domhoff In the article, the has taken a commanding tone right from the start while describing how power is being controlled by the rich minority group in United States. According to the author, there are generally four categories of stakeholders in the US who have influence over the political decisions taken. One is the corporate community which comprises the large income producing property owners who control the national scenario. The growth coalition comprises the subcategories of corporations and they control the local government. The third category is defined in the 'pluralism' theory that the general public controls the government through the voting and electing of governmental...
2 Pages(500 words)Lab Report

Correlation and regression and time series analysis

...household expenditures increase accordingly. The opposite is true. Scatter Diagram: Using this "best predictor" and the "Household final consumption expenditure: The following Scatter diagram shows the relationship between the two variables: "Household final consumption expenditure" and "Household and Utilities Expenditures" Figure 1: Scatter Diagram Relationship between Household Expenditures and House and Untilies Correlation Coefficient: Consumer expenditure on Housing, water, electricity, gas and other fuels have the highest positive correlation (0.948) with Household final consumption expenditure as shown in Appendix 1. Regression Equation: The following regression equation was...
2 Pages(500 words)Lab Report

Lab Report #2

...Irregular solid = 84.25/7 = 12.0357 g/cm3 Calculations No. 1 Table 6: Measurement of wire length using a Metric Ruler Ruler Readings Lengths Deviations Deviations squared Left End Right End 134mm 201mm 67 -0.5 0.25 130mm 298mm 68 0.5 0.25 140mm 207.5mm 67.5 0 0 20mm 87.5mm 67.5 0 0 Average Values 67.5 0 0.125 Length of the copper wire = (∑ of the individual lengths) / No. of significant figures = (67+68+67.5+67.5) / 4 = 67.5 mm No. 2 Table 7: Measurement of a wire length using an English Ruler Ruler Readings Lengths Deviations Deviations squared Left End Right...
7 Pages(1750 words)Lab Report

LAB 2 Classical Experiment

...Soc 465: Social Science Research Lab 2: ical Experiment Topic: Television Advertisements and Product Sales Identify the necessary components This study will entail looking at the buying patterns of adults in the community. Random products will be selected to determine whether or not, specifically, advertising on television causes people to buy more of the product, or whether there are other factors that have more significance in determining which product adults buy. The necessary components, then, are a survey instrument, access to a selected panel of adults, and research about which products to include in the questionnaire. 2) What is the research question? The overarching question...
2 Pages(500 words)Lab Report

Circuit Project 2

...Lab Report, Engineering and Construction Circuit Project 2 Simulation Simulation The equations are xn = Ax + BU and y = Cx + Du 1.1. Source Code % Function definition Function [xdot] = trans_analysis(tim, xn) xn1 = zeros (4, 2); xn1 = [xn(1); xn(2); xn(3); xn(4)]; Ln1 = 1.4; Rn1 = 3300; Ln2 = 0.15; Cn1 = 51e-6; Cn2 = 14e-6; un = 150 * sin(10 * tn); Ax = [0 1 1 0;(-Ln2 - Ln1) / (Ln1 * Ln2 * Cn1) (-Rn1 * Ln2 - Rn1 * Ln1) / (Ln1 * Ln2) – 1 / (Ln2 * Cn2) 0; 0 0 1 1;-1 / (Ln2 * Cn1) -Rn1 / Ln2 -1 / (Ln2 * Cn2) 0]; Bx = [0; (Ln2 + Ln1) / (Ln1 * Ln2);0;1 / Ln2]; Un = un; xn = A * xn1 + B * U; Calling Functions File t0 = 0; tnf = 3; tn_interval = 0.10; xn0 = [0;1;1;0]; tspan = t0:...
2 Pages(500 words)Lab Report

Geomorphology Lab 2

.../year 2. Based on your scatterplot, what time range does calibration have a significant effect on age estimate? What might cause this effect? Time range =between 5420 and 5410 years. It is this time range because it gives an “age plateau” whereby a wide span of real time is covered. The significant effect occurs at this point because of the combination of large influx of 14C-depleted, carbon from the oceans, and decrease in the rate of 14C production from the atmosphere causes the “age plateau” 3. What is the percentage change in the sedimentation rate from radio-carbon age based sedimentation and calibrated age-based sedimentation? Why is the radiocarbon age-based sedimentation rate not...
2 Pages(500 words)Lab Report

Experiment 2

...and environmental temperature. As a means of facilitating consistency and precision, three trials were performed for both hydrogen and helium. Data and results from each step of the experiment were recorded in the sheet below. Data and Results Sheet Section: 01 Date: February 3, 2015 Volume of pitcher: 2.050 L Air Pressure: 1.01 atm Room temperature: 296.9 K Water vapor pressure: 0.029 atm Hydrogen Trial 1 Trial 2 Trial 3 Mass of empty balloon 1.10g 1.13g 1.18g Mass of clipped pieces 0.17g 0.16g 0.13g Mass of added strings 0.0g 0.0g 0.0g Final mass of balloon 1.27g 1.29g 1.31g Mass of gas 0.55g 0.67g 0.56g Volume of leftover water 1.390 L 1.485 L 1.360 L Volume of gas in pitcher 2.050 – 1.390 = 0.660 L 2.050 - 1.485 =...
4 Pages(1000 words)Lab Report

Science Lab 2

...Science Lab 2 Science Lab 2 Introduction Speciation is the natural change in a species’ behavior and prevalence over a given periodfollowing a natural disturbance. This disturbance often cause of the species to locate to a different natural setting forcibly and almost immediately. In effect, the species is compelled to adapt and change to fit these new natural surroundings. The following lab report methodically accounts for the series of events following the sudden split of a species of lizards into two groups by a hurricane resulting in the isolation of a small group of individuals on an island far from the mainland. Hypothesis/Predicted Outcome Ecological conditions result in the natural selection of coloration in visits while... Lab 2...
1 Pages(250 words)Lab Report
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Essay on topic Lab Report 2: On the Significance of Correlation for FREE!

Contact Us