Discrete random variable | Probability distribution |Expected value and standard deviation | Math 2

[@MorongwaAngel-fz3dt]

expected value= 2,32
standard deviation= 1.22

[@learnablemath]

@@MorongwaAngel-fz3dt Awesome!

[@mbalitwala4883]

Last question
Expected value=2,96
Standard deviation=1,38

[@learnablemath]

@@mbalitwala4883 Great! But the standard deviation should be 1.22

[@mmokengmabote9001]

isnt that the expected value is 2,32 ?

[@mmokengmabote9001]

i got 2,32 for expected value and 1,223 for standard deviation

[@learnablemath]

@@mmokengmabote9001 Great, this is correct!