#confidence interval

I used to hang out in a science fiction forum on Facebook. One day someone pointed out that we didn’t have that many female members. So, some of the dudes were like “women are just not inclined to do science. It’s basic biology” A big argument started and at one point this dude draws the above graph. When I criticized it he thought it was because I didn't understand how statistical distributions work.   

Not only is the graph just something he drew, the axis also make no sense.  The thing is, this happens to me all of the time.  Often, during arguments people will try to make a statement that sounds… mathematical or science-y to bolster their point. Graphs, technical terms, journal citations, and and statistics are applied like decorations to a bad argument to create a veneer objectivity with the hope of intimidating the skeptical. Notice how he instructs me to “start visualizing statistical distributions.”  (I teach Calculus and Linear Algebra, and most in this group knew this.) Another example from a different guy on a different topic. (Racism)

This one was arguing with me about racism. (He thought that black people mostly faced racism because they complain about it too much) He linked to some stats that he claimed backed his observations.

It turned out he didn’t know what a confidence interval was and misread a series of stats that varied between 15-57% as *95%* because of this error. *sigh* great time.

Wait… this is the wrong kind of confidence! Well since our mad scientist from yesterday’s post is on a short break, today we’re going to fill in some of the gaps that post brought into view. First up is the confidence interval. There are some subtle points here, so this should help clarify a few things that may not have been clear yesterday. We’re going to do a somewhat deep dive into what the…

Now I select the parameters, 0.4 and 0.8 of the continuous Bernoulli distribution and get the simulated data. Two series of data can be compared. So I can obtain the confidence intervals of the difference of two population means and that of two population parameters. 

The basic concept is from statistics. When you have the sampling distribution of the sufficient statistic, critical values and probabilities can help you working the point estimation and interval estimation. 

The advantage of this program is that it can work the statistical computations of two population means and two population parameters, respectively.

The wild mouse that comes and goes at my house mixes up my life a little and gives it an interval of uncertainty. I read that one of the melancholies of life is to come home in the evening and see that everything is exactly how you left it - the curved strand of hair on the light kitchen tiles, the water puddles on the bathroom counter from the morning, the tilt of the chair, the dust in the corner. I don’t have that problem, because the mouse causes infinitesimal changes around that catch my awareness by surprise. They say that mice are incredibly curious creatures, and I can see exactly how it is curious, where it has explored today, by where it has left a dropping, for example. It isn’t always with distaste that I pick up the droppings, but sometimes I feel pulled into the mouse’s experience. Once, a grain was waiting for me in the middle of the bathroom floor, which I found quite unusual as mice don’t like to be in the middle of rooms and almost always scurry along walls. The mouse must have felt pretty comfortable and secure to venture into the middle. I translated that to trusting me. Removing that dropping in particular was heartwarming. It paralleled the feeling of being accepted by a cat.  

Answers for Applied Statistics: Find A 99% Confidence Interval

Answers for Applied Statistics: Find A 99% Confidence Interval for $3 Only (Instant Download)

Find A 99% Confidence Interval for the difference (male-female) between the actual proportions of male and female who prefer tea over a coffee which gender prefer tea over coffee.

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xkcd.com| Confidence Interval

re-posted from… https://xkcd.com/2311/

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Gary Cox is a great Quality resource in addition to being very funny! [email protected]

REFLECTION: FOR STUDENTS: Always remember to use data and analysis to make decisions. Rely upon your own critical thinking skills, and do not allow your team to be derailed by groupthink.

FOR ACADEMICS:Teach critical thinking skills first, not expected behaviors. Without each individual able to…

Gary Cox is a great Quality resource in addition to being very funny! [email protected]

REFLECTION: FOR STUDENTS: Always remember to use data and analysis to make decisions. Rely upon your own critical thinking skills, and do not allow your team to be derailed by groupthink.

FOR ACADEMICS:Teach critical thinking skills first, not expected behaviors. Without each individual able to…