Peace is the calm in the midst of the storm - Hari Srinivasan
Pensacola Beach
Spend weekend in Florida, Pensacola Beach. It was amazing. The water was just right, not too hot, not too cold, not too deep, big waves and sparkling white sands.
Peace is the quiet strength that lies within us all.
Peace is the quiet strength that lies within us all.
Oppenheimer
Looking forward to the movie, some scenes were shot on the Berkeley campus and there were some old time cars driving in front of the library followed by a camera van.
Apparently they hid all the garbage cans with fake trees.
California got a new lake
California sure needs all the water it can get. Last year was like an anomaly with the torrential rains, but at least something good came out of it. And I hope they don't go back to draining it again.
LA Times 6/29/23: "Once the largest body of freshwater west of the Mississippi, Tulare Lake was drained by farmers who diverted inflows to irrigate fields of cotton, pistachios, safflower and almonds in the San Joaquin Valley."
Low Crohbach's Alpha
[Concepts in Research Statistical Analysis]
In psychological and social sciences research, Cronbach's alpha is often used as a measure of internal consistency, which reflects how closely related a set of items are as a group.
The alpha coefficient ranges in value from 0 to 1 and can be used to describe the reliability of factors extracted from dichotomous (that is, questions with two possible answers) and/or multi-point formatted questionnaires or scales.
A high value of alpha (usually 0.7 or above) is taken as an indication that the items measure an underlying (or latent) construct. In other words, it indicates that the scale or test has good internal consistency and that the items within the scale reliably measure the same construct.
If the Cronbach's alpha is low (below 0.7, and especially below 0.6), it suggests that the items in the scale may not be measuring the same construct; they could be disparate and not well related. For instance, if you have a low alpha for the specific subscale, it suggests that the questions intended to measure that subscale may not be working well together to accurately and reliably assess extraversion in your sample.
However, a low alpha doesn't necessarily mean your measure is "bad." It could be that your measure is multidimensional (i.e., measuring multiple factors) rather than unidimensional. In addition, alpha is sensitive to the number of items in a scale; scales with fewer items can result in a lower alpha. Further, sometimes scales designed to cover a broad concept may naturally have a lower alpha.
ie, a low alpha can be an indicator to check your scale or test more thoroughly to understand whether all items are appropriate for your construct and your population. It may also signal the need for additional scales or tests to ensure you're capturing all aspects of a construct.
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