[mulvya]

> While today’s cumulative deaths is highly dependent on yesterday’s (it should theoretically never be less, for example), today’s new deaths isn’t as directly correlated to yesterday’s.

Sort of. Assuming a wave pattern, values will be close to neighbouring values and vary in an gradual manner.

[not2b]

Except that the timing for reporting cases and deaths often varies considerably on weekends, which is why it is better to look at 7 day moving averages to smooth out that noise.