Written lab report template

One female was used for all three treatments to hold other aspects size, shape, scent of the female's attractiveness constant.

The order of presentation of the three treatments was necessarily the same for all males, as the one female in each experiment could only have black paint added after the normal and clear treatments.

This design allows for a repeated measures analysis of variance as each male is tested with the same female under three different paint conditions. After each painting, the female was placed in a clear plastic 9 x 7 x 3 cm box. Males were held separately in labeled plastic petri dishes. Each male was introduced one at a time into the box at the point farthest from the female. He was removed when he mounted the female or after an arbitrarily chosen time of seconds had elapsed, whichever came first.

The time to mount or seconds no-mount was recorded. The pair was separated before their genitalia joined so no actual mating occurred. After all 15 males were tested, the female was painted for the next treatment and the males were tested in the same order.

To control for the possibility of males tiring by the second or third trial, a similar number of different males were tested three times each with one untreated female; i. Trials were alternated between experimental and control males throughout the day of testing.

A total of two females one experimental and one control and 29 males 15 experimental and 14 control were used. Statistical analyses were performed using the StatView program on a Macintosh microcomputer.

One-way, repeated measures ANOVAs were used to test for differences in males' time to mount among the three treatments and among the three control trials.

No significant differences were found in males' time to mount among the three treatments or among the three control trials based on a repeated measures ANOVA Table 1. Males mounted black painted females as readily as females with the typical black and orange pattern.

There was a slight, but not significant, increase in male's mean time to mount for the black treatment as compared to the normal and clear treatments Figure 1. The first control trial had a slightly larger, but not significantly different, male's mean time to mount as compared to the second and third trials Figure 2.

The male's mean times to mount were lower for the three control trials than for the three experimental treatments. Because the maximal time males were allowed to stay in the box without mounting the female was chosen arbitrarily, the one case where a male did not mount the female within the allotted seconds could have biased the results Table 1.

After excluding the mount time for the male that failed to mount, the results did not differ qualitatively from the above: no significant differences were found. By using one female for all three color treatments, any non-color aspects of the female's attractiveness were held constant. As the null hypothesis that males' time to mount is not significantly affected by color of the female was not rejected, males evidently used those other traits in seeking a mate.

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Share Flipboard Email. By Anne Marie Helmenstine, Ph. Anne Marie Helmenstine, Ph. This software development progress report PDF template has the developer's information, target date, time spent on each activity, the progress of work in percentage, completed tasks, incomplete tasks, challenges, and comments. A management report is a vital part of any company. Keep in mind that this report is for internal use only. It will be used to identify the current status and issues of the specific areas in your company.

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