According to the chart below, which sets of IQ scores fall in the bottom 50th percent of frequency?

(65 - 69), (130 - 144), (115 - 129), (70 - 84)

Explanation:

The bottom 50th percentile means could be reffered to as the lower bound of the median.

Writing out the IQ scores and its frequency

IQ score

Frequency

(65-69)(70-84)(85-99)(100-114)(115-129)(130 -144)

- - 2 - - - 15 - - - - 34 - - - 36 - - - - 10 - - - - - 3

Rearranging the frequency

2, 3, 10, 15, 34, 36

Cummulative frequency = 2, 5, 15, 30, 64, 100

50% of frequency = 50/100 × total Cummulative frequency

0.5 × 100 = 50

Therefore IQ scores below the 50 Cummulative frequency point are the IQ's with frequency 2, 3, 10 and 15

The corresponding IQ scores are;

(65 - 69), (130 - 144), (115 - 129), (70 - 84)

whats

the answer to your question would be something called hertz. the unit of measurement called a hertz, which is one cycle per second, is used to measure clock speed. within one cycle, your computer processes, refreshes, or updates itself to the changes that it is going through. in the case of computer clock speed, one hertz equals one tick per second. the clock speed of computers is usually measured in megahertz (mhz) or gigahertz (ghz)