1 of 4 ise 23 Measuring Functional Abilities of the Elderly Scattergram Statisti
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1 of 4 ise 23 Measuring Functional Abilities of the Elderly Scattergram Statistical Guide A scattergram (also known as a scatterplot or scatter diagram) depicts the relationship be- show where the case stands on tween two variables. For each case or participant, one dot is placed to both variables. Patterns of dots from the lower left to the upper right indicate a direct relationship. Patterns from the upper left to the lower right indicate an inverse relationship. The more scatter among the dots, the weaker the relationship Note that the horizontal axis in a scattergram is the x-axis, while the vertical axis is the y axis Excerpt from the Research Article Performance-based measures of function [in elderly individuals], particularly activities of daily living when collected in a standardized clinic setting, are presumed to be a meaningful tion of the conduct of similar tasks as usually performed performance on tasks conducted in a clinic setting under staff support reflects performance on the same task in the home... reflec in the home. However, the extent to which idealized conditions of lighting and clinic not known The 97 participants were 67% female, 24% Black, and 60% aged 65-74 A total of 20% of partici- pants attempted each task in the home, except for the task of stair climbing, where 56 participants the participants in the sample had usual vision worse than 2040 Between 95% and 100% of (58%) had no home staircase. Tests Stair climb and descend. The number of seconds to climb up a set of stairs and the time to descend the same set of steps at a lighting level used routinely by the participant. In the clinic, par- set at a 32-degree incline. Data are presented as number of are asked to climb seven steps ticipants steps per second. Plug insertion. The number of seconds to insert a plug into an electrical socket. A socket in the kitchen, preferably at waist level or higher, was selected. In the clinic, a board with a plug and socket is presented at eye level to a participant seated at a desk. was tested for the number of seconds to a telephone book. A photocopied page of the local same number for all participants were used in the clinic setting. The number of Telephone mumber look-up and dial. The participant locate a telephone number on a standard page in directory and the seconds required to dial the number on a push-button phone... was recorded. Source: West,S.K, Rubin, G.S, Munoz, B, Abraham, D., &Fried;, L.P:(1997), Assessing functional status: Commeli Journal of Gerontology: Medical Sciences, 52A, 4, M209-M2117 tion between performance on tasks conducted in a clinic setting and performance on the same task conducted at home.Explanation / Answer
1. The four scatter plot sshow positive , direct linear relationship. The observation points and dots in scatter plot follows a pattern that can be called same with staright line. Te direction of relationship indicates the sign of correlation (positive or negative-direct or indirect) among variables. In all four scatter plots, with increase in X variable, Y variable also increases. This indicates direct relationship.
2. Figure 2 indicates that for around 15 clinic speed downstairs, the man descended 24 home speed downstairs.
3. Per observation, it seems that client has best observation at clinic for around 15 speed downstairs. Because, for th every next clinic speed downstairs, the man's home speed downstairs decreases.
4. Figure 2 indicates strongest relationship. Because, the spread of the dots are on the regression line.
5. Figure 4 indicates weakest relationship. Te spread of observation dots are high and not on th eregression line.
6. Per article, both figures (2 and 3) had same number of participants.
7. Per the sactter diagram, score obtained in clinic ae noted in x axis.
8. Per graph, figure 1, the score at home is also same that is 0.3.
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