# Now let us summarize what we have seen to guide you

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Now let us summarize what we have seen. To guide you, we have written most of the summary already. Question 4. Complete the statements below by filling in the [SQUARE BRACKETS]. Hint 1: For a refresher on distribution types, check out Section 10.1 () Hint 2: The hist() table method ignores data points outside the range of its bins, but you may ignore this fact and calculate the areas of the bars using what you know about histograms from lecture. . .
Question 5. For which range of values does the plot in question 3 better depict the distribution of the population's player values : 0 to 0.5, or above 0.5? Explain your answer.
4. Earthquakes The next cell loads a table containing information about every earthquake with a magnitude above 4.5 in 2017, compiled by the US Geological Survey. (source: () )
In [121]: There are a several earthquakes that occurred in 2017 that we're interested in, and generally, we won't have access to this large population. Instead, if we sample correctly, we can take a small subsample of earthquakes in this year to get an idea about the distribution of magnitudes throughout the year! Question 1. In the following lines of code, we take two di ff erent samples from the earthquake table, and calculate the mean of the magnitudes of these earthquakes. Are these samples representative of the population of earthquakes in the original table (that is, the should we expect the mean to be close to the population mean)? Hint: Consider the ordering of the earthquakes table. Out[121]: time mag place 2017-12-31T23:48:50.980Z 4.8 30km SSE of Pagan, Northern Mariana Islands 2017-12-31T20:59:02.500Z 5.1 Southern East Pacific Rise 2017-12-31T20:27:49.450Z 5.2 Chagos Archipelago region 2017-12-31T19:42:41.250Z 4.6 18km NE of Hasaki, Japan 2017-12-31T16:02:59.920Z 4.5 Western Xizang 2017-12-31T15:50:22.510Z 4.5 156km SSE of Longyearbyen, Svalbard and Jan Mayen 2017-12-31T14:53:32.590Z 5.1 41km S of Daliao, Philippines 2017-12-31T14:51:58.200Z 5.1 132km SSW of Lata, Solomon Islands 2017-12-31T12:24:13.150Z 4.6 79km SSW of Hirara, Japan 2017-12-31T04:02:18.500Z 4.8 10km W of Korini, Greece ... (6350 rows omitted) earthquakes = Table().read_table( 'earthquakes_2017.csv' ).select([ 'time' , 'mag' , 'pla earthquakes
In [122]: Question 2. Write code producing a sample that should represent the population of size 500 then take the mean of the magnitudes of the earthquakes in this sample. Assign these to representative_sample and representative_mean respectively.