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statistics-for-data-scientists's Issues

Permutation Test Example: Web Stickiness

I am working through the example of session times in Chapter 3 > Permutation Test > Example: Web Stickiness. I have assumed that the data to which this example refers is that located in the file web_page_data.csv.

For pages A and B, respectively, it seems that the time is listed in the table as minutes, because the correct result for mean_b - mean_a (21.4) is obtained after converting to seconds. However, if this is correct, then Figure 3-3 is not. Figure 3-3 appears to show Time as minutes100, rather than as minutes60 (i.e., seconds). Which is correct?

Thanks!

Empty!!!

Where will I be able to access the code samples and example datasets of the book????

where is library ascii

In the source code, there is a library named ascii, which seems to be a drawing package. But I cannot find anywhere to download the package. Why? Where

Not able to download the dataset from Google drive

As recommended in the book I downloaded from GitHub R source file and when I execute them I get the following error message while downloading the data from Google drive.

Error in curl::curl_fetch_disk(url, x$path, handle = handle) :
Failed to open file C:\Users\amitk\OneDrive\Documents\statistics-for-data-scientists\data\state.csv.

I tried to find the solution for this error message but didn't get any luck. This is a humble request to kindly share the datasets so that I can practise the same.

png files

Where are the ".png" files used in the program located?

I have a question about the code in chapter2.r

What does the following code mean in line 24 of chapter2.r?
`

Code snippet 2.1

stat_fun <- function(x, idx) median(x[idx])
boot_obj <- boot(loans_income, R = 1000, statistic=stat_fun)
`
I'm not familiar with the Rใ€‚I can't find any figure or content in the book refer to this code.
I try to reproduct this to Python. If you plz give me some advise.
Thanks!

about the data

in your prep_datasets.r

you load the data file "state_populations.csv" and "murder_rate.csv"

state_pop <- read.csv("/Users/andrewbruce1/book/state_populations.csv")
murder_rate <- read.csv("/Users/andrewbruce1/book/murder_rate.csv")

but in your download_data.r

you didn't download the data file "state_populations.csv" and "murder_rate.csv"

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