Using the Given Frequency Distribution Table, How Many Students Scored

question 94

Multiple Choice

Using the given frequency distribution table, how many students scored 80 or higher? Frequency Distribution of 25 Test Scores
$$\begin{array} { | c | c | c | c | } \hline \begin{array} { c } \text { Class } \\\text { Interval }\end{array} & \text { Midpoint } & \text { Tally } & \begin{array} { c } \text { Class } \\\text { Frequency }\end{array} \\\hline 45 - 49 & 47 & / & 1 \\\hline 50 - 54 & 52 & / & 1 \\\hline 55 - 59 & 57 & / / & 2 \\\hline 60 - 64 & 62 & / & 1 \\\hline 65 - 69 & 67 & / & 1 \\\hline 70 - 74 & 72 & / / & 2 \\\hline 75 - 79 & 77 & / / / & 3 \\\hline 80 - 84 & 82 & / / / & 3 \\\hline 85 - 89 & 87 & / / / & 3 \\\hline 90 - 94 & 92 & / / / / / & 5 \\\hline 95 - 99 & 97 & / / / & 3 \\\hline\end{array}$$

• A)14
• B)12
• C)3
• D)11

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Definitions:

Allopolyploidy

Refers to polyploidy (more than two paired chromosomes) resulting from interspecific hybridization. If polyploidy arises within a species, it’s called autopolyploidy.

Chromosome Number

The total number of chromosomes present in the cell nucleus of an organism, which is characteristic of each species.

Hybridize

The act of crossing different species or varieties of organisms to produce hybrids, fostering genetic variation.

Genetic Variation

Variability in the genetic makeup among individuals within a population, which is essential for natural selection and evolution.