# 3 1 every 8th person boarding a plane is searched

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3_____________1. Every 8th person boarding a plane is searched thoroughly.__________________2. The names of 50 contestants are written on 50 cards. The cards areplaced in a bag then three names are picked from the bag._____________3. Senior high school teachers are interested in knowing what studytechniques their students are utilizing. Rather than assessing allstudents, teachers randomly select 10 students from each of thesections to comprise their sample.__________________4. A sample of 1,000 was sought to estimate the average achievement inmath of grade 7 students in public schools. The average grade 7enrolment in public schools is 100, thus 10 schools were randomlyselected and all grade 7 students in that school were tested._____________5. A researcher who is studying the effect of social media on office employeeconducted a survey of 50 randomly selected workers from each ofthese categories: high school graduate, with undergraduate degrees,with master’s degree, and with doctoral degree.What’s NewActivity 2: Can you tell?Directions:In the given problem below, identify the given value as aStatisticor aParameter. Write your answer on the space provided.______1.A study of every national park’s sale receiptsfor December shows they boughtin an average of 10 million peso of revenue.______2. 60 male shoppers of Budget Wise were randomly chosen and their waistlineswere measured revealing an average waistline of 37 inches.______3. 500 Filipino men were randomly chosen and asked if they are willing to workabroad leaving their families behind and 65% agreed to work abroad.______4. After reviewing the arrival times of every flight that landed at the NAIA airportlast month, it was determined that the on-time rate for flights is 68%.______5. It was found out that all 45 teachers of a certain high school have masters’degree.
4What is itRandom Sampling, Parameter, Statistics, and Sampling DistributionRandom SamplingA part of sampling method or technique in which each sample has an equalprobability of being chosen is called Random Sampling. A sample chosen randomly ismeant to be unbiased representation of the total population. An unbiased randomsample is important for drawing conclusions.There are four methods of random sampling.1.Simple Random Samplingis one of the simplest forms of collecting data from thetotal population. In this method, every element of the population has the sameprobability of being selected for inclusion in the sample. One way to do simplerandom sampling is using Table of Random Numbers. This contain rows andcolumns of mechanically generated digits. Another way of doing this is by usingLottery Method. Under this, there are two methods;Simple Random Sampling With Replacement (SRSWR)In this method, the population units which is selected in the sample isobserved and replaced in the population so that the selected unit has thesame probability of selection in the successive sample draw.

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