nothing
90.
The average range for the Wechsler Intelligence Scale is typically considered to be between 90 and 110, which falls within the normal range of intelligence. A score below 90 may indicate below-average intelligence, while a score above 110 may indicate above-average intelligence.
(77+83+89+86+x)/5=85 (335+x)/5=85 (335+x)=85*5 335+x=425 x=425-335 x=90 He must get 90% on his fifth test to average 85%.
The average is all the numbers added together and then divided by the # of numbers.(80+85+90+88+86+83+89+70)/8=671/8=83.875Order of operations has the brackets first and then the division.
85
85+85=170+90=260+100=360/4=90 Problem solved.
I would say from about 78-90 on an average
For 77 83 69 72 85 90 95 75 55 45: σ=15.4071
The average "IQ" on many standardized IQ tests is a standard score of 100. The "Average Range" is often 90 to 110 or 85 to 115, depending on the measure used.
100+90+110=300 300 divided by 3 =100
90