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Use the Frequency Distribution to Find the Mean and the Sample

question 178

Multiple Choice

Use the frequency distribution to find the mean and the sample standard deviation. Does the data form a normal distribution? Remember: if the data fall within 2% of the empirical rule of 68%, 95%, and 99.7% for one, two, or three standard deviations, respectively, they form a normal distribution. $\begin{array}{|ccc|}\hline \text { Interval } & \text { Midpoint x }& \text {Frequency t }\\\hline42.5-50.5 && 9 \\50.5-58.5 && 45 \\58.5-66.5 && 205 \\66.5-14.5 && 190 \\14.5-82.5 && 44 \\82.5-90.5 && 20\\\hline\end{array}$

Explain the process and significance of pollination in plant reproduction.

Understand the concept of grafting and its applications in horticulture.

Recognize the roles and mechanisms of plant hormones in growth and development.

Comprehend the significance of photoperiod and light cues in flowering and plant development.

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